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Contents
- The climate of El Cajon
- The best time to visit El Cajon
- The worst time to visit El Cajon
- Spring weather in El Cajon
- Summer weather in El Cajon
- Autumn weather in El Cajon
- Winter weather in El Cajon
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
The climate of El Cajon
El Cajon, California, classified as Csa or Mediterranean hot summer climate, according to the Köppen climate classification. Nested in a valley surrounded by mountains, El Cajon is shielded from much of the coastal weather influence from the Pacific Ocean.
The Mediterranean climate means warm to hot, dry summers and mild to cool, wet winters. Looking at climatological parameters throughout the year, the city experiences quite stable weather conditions with temperatures ranging from 48.4°F (9.1°C) to 83.8°F (28.8°C). The highest average temperature is observed in August at 83.8°F (28.8°C), while the lowest occurs in January and February, around 48°F (8.9°C). Humidity also follows the Mediterranean pattern; it increases with cooler temperatures and decreases with warmer weather, fluctuating between 53% to 66%.
Rainfall shows clear seasonal patterns, with the city experiencing the least rainfall from June to September, registering just 0.04" (1mm) in June. In contrast, the highest rainfall occurs in February, with 1.81" (46mm). It is also interesting to note the shifts in the daylight hours and sunshine duration. Residents can expect the longest daylight during June and shortest in December. As for sunshine, it is most plentiful from June to August, with July charting the highest number of sunshine hours at 12.1.
The Mediterranean climate means warm to hot, dry summers and mild to cool, wet winters. Looking at climatological parameters throughout the year, the city experiences quite stable weather conditions with temperatures ranging from 48.4°F (9.1°C) to 83.8°F (28.8°C). The highest average temperature is observed in August at 83.8°F (28.8°C), while the lowest occurs in January and February, around 48°F (8.9°C). Humidity also follows the Mediterranean pattern; it increases with cooler temperatures and decreases with warmer weather, fluctuating between 53% to 66%.
Rainfall shows clear seasonal patterns, with the city experiencing the least rainfall from June to September, registering just 0.04" (1mm) in June. In contrast, the highest rainfall occurs in February, with 1.81" (46mm). It is also interesting to note the shifts in the daylight hours and sunshine duration. Residents can expect the longest daylight during June and shortest in December. As for sunshine, it is most plentiful from June to August, with July charting the highest number of sunshine hours at 12.1.
The best time to visit El Cajon
Taking account of all the climatic parameters, it is evident that the ideal time to visit El Cajon would be from June to August. During these months, the weather is at its warmest with average temperatures reaching up to 83.8°F (28.8°C), perfect for those looking to enjoy the outdoors and participate in recreational activities. These months also register the least rainfall, measuring only about 0.39" (10mm) in June and 0.31" (8mm) in July and August. In addition, the city records an abundance of sunshine hours and the longest daylight duration, ideal for sightseeing and exploring.
The worst time to visit El Cajon
Based on the climatologic data, it would be advisable to avoid visiting El Cajon between January and February. These are the coldest months with temperatures dropping to 48.4°F (9.1°C) and 48°F (8.9°C) respectively. Furthermore, February witnesses the highest rainfall levels reaching up to 1.81" (46mm), leading to a higher likelihood of encountering rainy days.
Spring weather in El Cajon
Spring in El Cajon, which ranges from March to May, is characterized by a gentle rise in temperatures moving from 67.3°F (19.6°C) in March to about 71.6°F (22°C) in May. On the other hand, rainfall decreases from 0.79" (20mm) in March to 0.39" (10mm) in May. Daylight hours also increase within this period, from 12 hours in March, reaching up to 13.9 hours by May. The spring months are quite windy, with wind speeds averaging between 5.1mph (8.2km/h) and 5.5mph (8.9km/h).
Summer weather in El Cajon
Summer, regarded as the prime season in El Cajon, spans from June to August. The temperatures climb to and maintain their peak, with the hottest month being August at 83.8°F (28.8°C). In terms of precipitation, the summer months are devoid of significant rainfall, recording only about 0.39" (10mm) in June and 0.31" (8mm) in July and August respectively. The summer season is synonymous with longer days and more sunshine, the highest recorded in July at 14.1 daylight hours and 12.1 sunshine hours.
Autumn weather in El Cajon
Autumn, extending from September to November, sees a gradual drop in temperatures from 82.6°F (28.1°C) in September to 71.1°F (21.7°C) in November. Rainfall during this period is relatively low compared to other seasons, with only 0.31" (8mm) in September, 0.2" (5mm) in October, and 0.87" (22mm) in November. The daylight hours and sunshine duration also decrease towards the winter months, with November registering 10.5 daylight hours and 7.2 sunshine hours.
Winter weather in El Cajon
Winter in El Cajon, from December to February, presents the coldest temperatures, dropping to 48.4°F (9.1°C) in January and lingering around 48°F (8.9°C) in February. The season observes the highest levels of rainfall with 1.42" (36mm) in December and a significant leap to 1.81" (46mm) in February. The winter months record the shortest daylight hours, with December categorized as having the least at 10 hours. Despite the season, El Cajon still experiences considerable sunshine, with 6.7 hours in December.
Weather in January
January in El Cajon, California, manifests a mild climate which is chilly but not excessively cold, merging well with post-holiday routines. The climatic conditions are favorable for many outdoor endeavors, despite the presence of some cloud cover. Weather in January »
Weather in February
In February, El Cajon experiences a slight increase in humidity levels, which brings a noticeable moistness in the morning atmosphere. Frequent rainfall coupled with mildly rising temperature typically marks the arrival of the spring season in the area. Weather in February »
Weather in March
As spring arrives in full bloom, March signifies a well-marked departure from the colder months. With temperatures continuing their ascension, conditions for outdoor activities like hiking and sightseeing enhance considerably. Longer sunshine hours and increasing daylight time make the weather more enjoyable for those in love with the outdoors. Weather in March »
Weather in April
In El Cajon, April is an inviting month full of sunshine, further boosting the daytime temperature. As the humidity starts to stabilize, the weather becomes dry, making this the optimum time of the year for outdoor activities. With longer daylight and the extended photoperiod, trips to the city's beautiful beaches and outdoor parks become quite popular. Weather in April »
Weather in May
May's weather sees El Cajon progressing further into the dry season, giving rise to slightly warmer conditions. As the month advances, the city experiences brighter sunlit days and soothing evenings. Residents and tourists alike enjoy venturing out to partake in all the lush greenery and colorful blooms that the city landscapes have to offer. Weather in May »
Weather in June
With the advent of June, El Cajon starts experiencing the classic California summer weather. The temperature steadily rises, making afternoons warm whilst retaining comfort during morning and evening hours. The city witnesses progressively lesser cloud cover, resulting in prolonged and direct solar exposure. Weather in June »
Weather in July
July marks the zenith of summer in El Cajon, with temperatures reaching their annual peak. With the absence of rainfall and high sunshine hours, watersports and sunbathing activities are quite prevalent. Evenings are balmy, making it enjoyable to wander around the City or dine al fresco in the pleasant weather. Weather in July »
Weather in August
August remains a prime summer month in El Cajon, with little alteration in the prevailing weather patterns. While the heat continues, the city experiences a negligible uptick in average temperature. Days remain sunny and long, encouraging both residents and tourists to explore the city's outdoor attractions. Weather in August »
Weather in September
September denotes a gentle shift from summer towards fall. The weather sees a reduction in temperature, with days becoming slightly cooler, providing respite from the summer heat. While the sun continues to bathe the city in its warmth, the declining daylight hours signal the onset of the autumn season. Weather in September »
Weather in October
The month of October signals autumn in full swing in El Cajon, with weather becoming noticeably cooler, especially during the night. The decrease in cloud cover promotes clear skies, leading to spectacular sunsets that add a unique charm to the city's evenings. Weather in October »
Weather in November
November sees a further dip in temperature, as cool air envelops El Cajon. This transition in weather brings about a different scenery as leaves change color, providing a backdrop for scenic views and vibrant photographs. As daylight hours continue to shorten, the city seems to prepare itself for the arrival of winter. Weather in November »
Weather in December
Finally, December brings with it the chill of the winter season, covering El Cajon in a cool atmosphere. As temperatures continue to fall, the climate becomes conducive for cozy indoor activities. With the year almost ending, long nights and condensed daylight hours dominate most part of the day. Weather in December »
Updated: Aug 28, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How much does it rain?
In El Cajon, during the entire year, the rain falls for 56.1 days and collects up to 8.27" (210mm) of precipitation.
When is the lowest UV index?
January, February, November and December, with an average maximum UV index of 4, are months with the lowest UV index.
What is the wettest month?
The month with the most rainfall is February, when the rain falls for 5.9 days and typically aggregates up to 1.81" (46mm) of precipitation.
When is Daylight Saving Time (DST)?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from PST to PDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from PDT to PST.
What is the most humid month?
The most humid month is May, with an average relative humidity of 66%.
What is the driest month?
The month with the least rainfall is June, when the rain falls for 1.4 days and typically collects 0.04" (1mm) of precipitation.
When are the longest days?
June has the longest days of the year, with an average of 14h and 18min of daylight.
What is the month with the highest UV index?
The months with the highest UV index are June through September, with an average maximum UV index of 6.
What month has the most sunshine?
The month with the most sunshine is July, with an average of 12.1h of sunshine.
What month is the hottest?
El Cajon witnesses the warmest weather in August, with temperatures averaging a high of 83.8°F (28.8°C) and a low of 65.8°F (18.8°C).
What is the least humid month?
The least humid month is November, with an average relative humidity of 53%.
What month is the coldest?
December stands out as El Cajon's coldest month, with an average high-temperature of 63.7°F (17.6°C) and a low-temperature of 47.8°F (8.8°C).
What is the month with the shortest days?
December has the shortest days of the year, with an average of 10h and 0min of daylight.
What is the month with the least sunshine?
With an average of 6.7h of sunshine, December has the least sunshine of the year.
Average temperature
El Cajon, CA
The warmest month (with the highest average high temperature) is August (83.8°F).
The month with the lowest average high temperature is December (63.7°F).
The month with the highest average low temperature is August (65.8°F).
The coldest month (with the lowest average low temperature) is December (47.8°F).
Average pressure
El Cajon, CA
- Average pressure in January:
30.09"Hg - Average pressure in February:
30.04"Hg - Average pressure in March:
30.01"Hg - Average pressure in April:
29.95"Hg - Average pressure in May:
29.91"Hg - Average pressure in June:
29.87"Hg
- Average pressure in July:
29.9"Hg - Average pressure in August:
29.88"Hg - Average pressure in September:
29.87"Hg - Average pressure in October:
29.93"Hg - Average pressure in November:
30.01"Hg - Average pressure in December:
30.06"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The months with the lowest atmospheric pressure are June and September (29.87"Hg).
Average wind speed
El Cajon, CA
- Average wind speed in January:
4.8mph - Average wind speed in February:
5mph - Average wind speed in March:
5.1mph - Average wind speed in April:
5.5mph - Average wind speed in May:
5.4mph - Average wind speed in June:
4.8mph
- Average wind speed in July:
4.7mph - Average wind speed in August:
4.5mph - Average wind speed in September:
4.4mph - Average wind speed in October:
4.3mph - Average wind speed in November:
4.7mph - Average wind speed in December:
4.8mph
The windiest month (with the highest average wind speed) is April (5.5mph).
The calmest month (with the lowest average wind speed) is October (4.3mph).
Average humidity
El Cajon, CA
The month with the highest relative humidity is May (66%).
The month with the lowest relative humidity is November (53%).
Average rainfall
El Cajon, CA
- Average rainfall in January:
1.1" - Average rainfall in February:
1.81" - Average rainfall in March:
0.79" - Average rainfall in April:
0.63" - Average rainfall in May:
0.39" - Average rainfall in June:
0.04"
- Average rainfall in July:
0.39" - Average rainfall in August:
0.31" - Average rainfall in September:
0.31" - Average rainfall in October:
0.2" - Average rainfall in November:
0.87" - Average rainfall in December:
1.42"
The wettest month (with the highest rainfall) is February (1.81").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days
El Cajon, CA
- Average rainfall days in January:
5.2 days - Average rainfall days in February:
5.9 days - Average rainfall days in March:
7.7 days - Average rainfall days in April:
6.7 days - Average rainfall days in May:
4.8 days - Average rainfall days in June:
1.4 days
- Average rainfall days in July:
4.9 days - Average rainfall days in August:
3.3 days - Average rainfall days in September:
4.1 days - Average rainfall days in October:
2.7 days - Average rainfall days in November:
3.5 days - Average rainfall days in December:
5.9 days
The month with the highest number of rainy days is March (7.7 days).
The month with the least rainy days is June (1.4 days).
Average daylight / Average sunshine
El Cajon, CA
- Average daylight in January:
10h and 2min - Average daylight in February:
11h and 0min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 0min - Average daylight in May:
13h and 5min - Average daylight in June:
14h and 2min
- Average daylight in July:
14h and 1min - Average daylight in August:
13h and 2min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 2min - Average daylight in November:
10h and 3min - Average daylight in December:
10h and 0min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in January:
6h and 5min - Average sunshine in February:
6h and 5min - Average sunshine in March:
8h and 4min - Average sunshine in April:
10h and 5min - Average sunshine in May:
11h and 1min - Average sunshine in June:
12h and 0min
- Average sunshine in July:
12h and 1min - Average sunshine in August:
12h and 0min - Average sunshine in September:
10h and 2min - Average sunshine in October:
9h and 1min - Average sunshine in November:
7h and 1min - Average sunshine in December:
6h and 4min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).
Average sunshine days
El Cajon, CA
- Average sunshine days in January:
25.4 days - Average sunshine days in February:
21.9 days - Average sunshine days in March:
22.9 days - Average sunshine days in April:
23.2 days - Average sunshine days in May:
24.8 days - Average sunshine days in June:
27.7 days
- Average sunshine days in July:
22.5 days - Average sunshine days in August:
23.9 days - Average sunshine days in September:
24.1 days - Average sunshine days in October:
26.7 days - Average sunshine days in November:
25.5 days - Average sunshine days in December:
24.7 days
The month with the most sunshine days is June (27.7 days).
The month with the least sunshine days is February (21.9 days).
Average UV index
El Cajon, CA
The months with the highest UV index are June, July, August and September (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 4).
Average cloud cover
El Cajon, CA
The months with the most cloud cover are March and December (Cloud cover 23).
The month with the least cloud cover is August (Cloud cover 7).
Average visibility
El Cajon, CA
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
El Cajon, California, USA
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