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Contents
- 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 sea temperature
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Weather in January
January, the same as December, in Rio del Mar, California, is a moderate winter month, with temperature in the range of an average low of 46.9°F (8.3°C) and an average high of 58.6°F (14.8°C). Rio del Mar starts January with an average high-temperature of a still mild 58.6°F (14.8°C), hinting at a minimal fluctuation from December. Weather in January »
Weather in February
The last month of the winter, February, is another mild month in Rio del Mar, California, with an average temperature fluctuating between 59.4°F (15.2°C) and 45.5°F (7.5°C). Rio del Mar's February showcases an average high-temperature of a still mild 59.4°F (15.2°C), hardly distinct from January's 58.6°F (14.8°C). Weather in February »
Weather in March
The first month of the spring, March, is still a mild month in Rio del Mar, California, with temperature in the range of an average high of 60.4°F (15.8°C) and an average low of 45.9°F (7.7°C). In the transition from February to March, Rio del Mar reports an average high-temperature of a still mild 60.4°F (15.8°C), indicating a close resemblance to the prior month. Weather in March »
Weather in April
April in Rio del Mar, California, is an enjoyable spring month, with an average temperature fluctuating between 47.3°F (8.5°C) and 63.1°F (17.3°C). Entering April, Rio del Mar's average high-temperature reads a comfortable 63.1°F (17.3°C), indicating a close resemblance to the previous month's climate. Weather in April »
Weather in May
May, the last month of the spring in Rio del Mar, is another comfortable month, with an average temperature fluctuating between 64.9°F (18.3°C) and 49.1°F (9.5°C). Rio del Mar's weather in May, with an average high-temperature of a still comfortable 64.9°F (18.3°C), subtly shifts from April's 63.1°F (17.3°C). Weather in May »
Weather in June
June, the first month of the summer in Rio del Mar, is a pleasant month, with an average temperature fluctuating between 51.4°F (10.8°C) and 70°F (21.1°C). The beginning of June reveals an average high-temperature of a pleasant 70°F (21.1°C), showing minimal deviation from the previous month. Weather in June »
Weather in July
July, like June, is another pleasant summer month in Rio del Mar, California, with an average temperature fluctuating between 72.5°F (22.5°C) and 53.4°F (11.9°C). Transitioning into July, Rio del Mar records an average high-temperature of a still agreeable 72.5°F (22.5°C), almost identical to June's 70°F (21.1°C). Weather in July »
Weather in August
The last month of the summer, August, is also an agreeable month in Rio del Mar, California, with an average temperature varying between 54.7°F (12.6°C) and 73°F (22.8°C). The warmest period is usually observed in August and September, with the average high-temperature peaking at 73°F (22.8°C). Weather in August »
Weather in September
The first month of the autumn, September, is also an agreeable month in Rio del Mar, California, with an average temperature fluctuating between 55.2°F (12.9°C) and 73°F (22.8°C). Peak temperatures are observed in August and September, averaging a high-temperature of 73°F (22.8°C). Weather in September »
Weather in October
October, the same as September, in Rio del Mar, California, is another pleasant autumn month, with temperature in the range of an average low of 53.8°F (12.1°C) and an average high of 69.4°F (20.8°C). Rio del Mar's weather in October indicates an average high-temperature of a still agreeable 69.4°F (20.8°C), nearly consistent with the 73°F (22.8°C) of September. Weather in October »
Weather in November
November, the last month of the autumn in Rio del Mar, is another refreshing month, with temperature in the range of an average low of 49.6°F (9.8°C) and an average high of 62.8°F (17.1°C). November marks a gentle change in average high-temperature, declining from October's agreeable 69.4°F (20.8°C) to a comfortable 62.8°F (17.1°C). Weather in November »
Weather in December
The first month of the winter, December, is still a refreshing month in Rio del Mar, California, with an average temperature ranging between min 46.2°F (7.9°C) and max 57.2°F (14°C). Rio del Mar records the coldest temperatures in December, averaging a high of 57.2°F (14°C) and a low of 46.2°F (7.9°C). Weather in December »
Updated: Feb 10, 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 Rio del Mar?
Throughout the year, in Rio del Mar, California, there are 77.9 rainfall days, and 14.45" (367mm) of precipitation is accumulated.
What is the month with the lowest UV index in Rio del Mar?
February and November, with an average maximum UV index of 3, are months with the lowest UV index.
What is the most humid month in Rio del Mar?
With an average relative humidity of 75%, March is the most humid month.
When is Daylight Saving Time (DST) in Rio del Mar?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Rio del Mar, California, 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.
When is the ocean coldest in Rio del Mar?
The month with the coldest seawater is April, with an average ocean temperature of 53.8°F (12.1°C).
When are the longest days in Rio del Mar?
With an average of 14h and 42min of daylight, June has the longest days of the year in Rio del Mar, California.
What is the month with the highest UV index in Rio del Mar?
The months with the highest UV index are June through September, with an average maximum UV index of 5.
What is the driest month in Rio del Mar?
The months with the least rainfall in Rio del Mar are July and August Rain falls for 2.8 days and accumulates 0.04" (1mm) of rain.
What month has the most sunshine in Rio del Mar?
With an average of 11.7h of sunshine, July has the most sunshine of the year.
What are the warmest months in Rio del Mar?
The peak of Rio del Mar's temperatures is noted during August and September, averaging a high-temperature of 73°F (22.8°C).
What are the months with the warmest ocean in Rio del Mar?
August and September, with an average ocean temperature of 58.1°F (14.5°C), are months with the warmest seawater in Rio del Mar, California.
What is the least humid month in Rio del Mar?
With an average relative humidity of 68%, October is the least humid month in Rio del Mar, California.
What is the coldest time of year in Rio del Mar?
December is the month when Rio del Mar, California, sees the average lowest temperatures, with a high of 57.2°F (14°C) and a low of 46.2°F (7.9°C).
What is the wettest month in Rio del Mar?
December is the month with the most rainfall in Rio del Mar. Rain falls for 10.3 days and accumulates 2.8" (71mm) of precipitation.
What is the month with the shortest days in Rio del Mar?
With an average of 9h and 42min of daylight, December has the shortest days of the year in Rio del Mar.
What is the month with the least sunshine in Rio del Mar?
With an average of 5.8h of sunshine, December has the least sunshine of the year in Rio del Mar.
Average temperature
Rio del Mar, CA
The warmest months (with the highest average high temperature) are August and September (73°F).
The month with the lowest average high temperature is December (57.2°F).
The month with the highest average low temperature is September (55.2°F).
The coldest month (with the lowest average low temperature) is February (45.5°F).
Average pressure
Rio del Mar, CA
- Average pressure in January:
30.13"Hg - Average pressure in February:
30.08"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
30.04"Hg - Average pressure in May:
29.99"Hg - Average pressure in June:
29.93"Hg
- Average pressure in July:
29.94"Hg - Average pressure in August:
29.93"Hg - Average pressure in September:
29.92"Hg - Average pressure in October:
29.98"Hg - Average pressure in November:
30.07"Hg - Average pressure in December:
30.11"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is September (29.92"Hg).
Average wind speed
Rio del Mar, CA
- Average wind speed in January:
5.7mph - Average wind speed in February:
6.8mph - Average wind speed in March:
7mph - Average wind speed in April:
7.4mph - Average wind speed in May:
7.2mph - Average wind speed in June:
6.8mph
- Average wind speed in July:
5.5mph - Average wind speed in August:
5.5mph - Average wind speed in September:
5.7mph - Average wind speed in October:
5.7mph - Average wind speed in November:
5.7mph - Average wind speed in December:
6.2mph
The windiest month (with the highest average wind speed) is April (7.4mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).
Average humidity
Rio del Mar, CA
The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is October (68%).
Average rainfall
Rio del Mar, CA
- Average rainfall in January:
2.56" - Average rainfall in February:
2.64" - Average rainfall in March:
2.48" - Average rainfall in April:
0.94" - Average rainfall in May:
0.67" - Average rainfall in June:
0.08"
- Average rainfall in July:
0.04" - Average rainfall in August:
0.04" - Average rainfall in September:
0.12" - Average rainfall in October:
0.47" - Average rainfall in November:
1.61" - Average rainfall in December:
2.8"
The wettest month (with the highest rainfall) is December (2.8").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days
Rio del Mar, CA
- Average rainfall days in January:
9.3 days - Average rainfall days in February:
8.8 days - Average rainfall days in March:
13.4 days - Average rainfall days in April:
9 days - Average rainfall days in May:
6.5 days - Average rainfall days in June:
2.8 days
- Average rainfall days in July:
2.8 days - Average rainfall days in August:
1.2 days - Average rainfall days in September:
2.7 days - Average rainfall days in October:
4.5 days - Average rainfall days in November:
6.6 days - Average rainfall days in December:
10.3 days
The month with the highest number of rainy days is March (13.4 days).
The month with the least rainy days is August (1.2 days).
Average sea temperature
Rio del Mar, CA
The best months for swimming (with the highest average sea temperature) are August and September (58.1°F).
The coldest month (with the lowest average sea temperature) is April (53.8°F).
Average daylight / Average sunshine
Rio del Mar, CA
- Average daylight in January:
10h and 0min - Average daylight in February:
10h and 5min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 1min - Average daylight in May:
14h and 1min - Average daylight in June:
14h and 4min
- Average daylight in July:
14h and 2min - Average daylight in August:
13h and 3min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 1min - Average daylight in November:
10h and 1min - Average daylight in December:
9h and 4min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in January:
6h and 1min - Average sunshine in February:
6h and 1min - Average sunshine in March:
7h and 4min - Average sunshine in April:
10h and 0min - Average sunshine in May:
10h and 2min - Average sunshine in June:
11h and 3min
- Average sunshine in July:
11h and 4min - Average sunshine in August:
11h and 4min - Average sunshine in September:
10h and 5min - Average sunshine in October:
7h and 0min - Average sunshine in November:
6h and 3min - Average sunshine in December:
5h and 5min
The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).
Average sunshine days
Rio del Mar, CA
- Average sunshine days in January:
20.5 days - Average sunshine days in February:
17.8 days - Average sunshine days in March:
16.4 days - Average sunshine days in April:
19.9 days - Average sunshine days in May:
22.1 days - Average sunshine days in June:
25.3 days
- Average sunshine days in July:
27.4 days - Average sunshine days in August:
27.8 days - Average sunshine days in September:
26.3 days - Average sunshine days in October:
25.3 days - Average sunshine days in November:
22 days - Average sunshine days in December:
19.5 days
The month with the most sunshine days is August (27.8 days).
The month with the least sunshine days is March (16.4 days).
Average UV index
Rio del Mar, CA
The months with the highest UV index are June, July, August and September (UV index 5).
The months with the lowest UV index are February and November (UV index 3).
Average cloud cover
Rio del Mar, CA
The month with the most cloud cover is March (Cloud cover 38).
The months with the least cloud cover are July and September (Cloud cover 15).
Average visibility
Rio del Mar, 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).
Rio del Mar, California, USA
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