Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
During May, El Cajon records an average high-temperature of a still agreeable 71.6°F (22°C), marking a slight divergence from April's 70°F (21.1°C). An average temperature of 54°F (12.2°C) marks the nights in El Cajon in May.Humidity
With an average relative humidity of 66%, May is the most humid month.Rainfall
In El Cajon, during May, the rain falls for 4.8 days and regularly aggregates up to 0.39" (10mm) of precipitation. In El Cajon, during the entire year, the rain falls for 56.1 days and collects up to 8.27" (210mm) of precipitation.Daylight
In May, the average length of the day in El Cajon is 13h and 52min.On the first day of May, sunrise is at 5:59 am and sunset at 7:30 pm. On the last day of the month, sunrise is at 5:40 am and sunset at 7:50 pm PDT.
Sunshine
The average sunshine in May is 11.1h.UV index
In El Cajon, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the average person.Note: The daily high UV index of 5 in May translates into this advice:
Exercise care. People with light skin might get burns in fewer than 30 minutes. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in May?
What is the most humid month?
What is the average humidity in May?
How many days does it rain in May?
What is the average length of the day in May?
When are sunrise and sunset in May?
How many hours of sunshine does El Cajon have in May?
What is the UV index intensity in May?
Average temperature in May
El Cajon, CA
- Average high temperature in May: 71.6°F
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).
- Average low temperature in May: 54°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 in May
El Cajon, CA
- Average pressure in May: 29.91"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 in May
El Cajon, CA
- Average wind speed in May: 5.4mph
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 in May
El Cajon, CA
- Average humidity in May: 66%
The month with the highest relative humidity is May (66%).
The month with the lowest relative humidity is November (53%).
Average rainfall in May
El Cajon, CA
- Average rainfall in May: 0.39"
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 in May
El Cajon, CA
- Average rainfall days in May: 4.8 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 in May /
Average sunshine in May
El Cajon, CA
- Average daylight in May: 13h and 5min
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 May: 11h and 1min
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 in May
El Cajon, CA
- Average sunshine days in May: 24.8 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 in May
El Cajon, CA
- Average UV index in May: 5
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 in May
El Cajon, CA
- Average cloud cover in May: 19
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 in May
El Cajon, CA
- Average visibility in May: 6mi
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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