Climate and monthly weather forecastSan Clemente, CA
Climate and monthly weather forecast
Weather in January
January, like December, in San Clemente, California, is another enjoyable winter month, with temperature in the range of an average high of 64.2°F (17.9°C) and an average low of 50.9°F (10.5°C). The dawn of January sees an average high-temperature of a still refreshing 64.2°F (17.9°C), subtly contrasting with December's 62.6°F (17°C). Weather in January »Weather in February
February, the last month of the winter in San Clemente, is another comfortable month, with temperature in the range of an average high of 63.1°F (17.3°C) and an average low of 49.6°F (9.8°C). The onset of February brings with it an average high-temperature of a still comfortable 63.1°F (17.3°C), showing a negligible variation from the month before. Weather in February »Weather in March
March, the first month of the spring in San Clemente, is also an enjoyable month, with temperature in the range of an average high of 64.8°F (18.2°C) and an average low of 50.5°F (10.3°C). The onset of March manifests an average high-temperature of a still comfortable 64.8°F (18.2°C), demonstrating a minor variation from the preceding month. Weather in March »Weather in April
April, the same as March, is another enjoyable spring month in San Clemente, California, with temperature in the range of an average high of 66.6°F (19.2°C) and an average low of 52.7°F (11.5°C). April's arrival registers an average high-temperature of a still enjoyable 66.6°F (19.2°C), closely aligning with the temperature of the previous month. Weather in April »Weather in May
The last month of the spring, May, is another comfortable month in San Clemente, California, with an average temperature fluctuating between 67.6°F (19.8°C) and 55°F (12.8°C). The transition into May marks the average high-temperature at a still refreshing 67.6°F (19.8°C), differing minimally from April's 66.6°F (19.2°C). Weather in May »Weather in June
June, the first month of the summer in San Clemente, is an agreeable month, with temperature in the range of an average low of 57.7°F (14.3°C) and an average high of 71.2°F (21.8°C). The arrival of June coincides with an average high-temperature of an agreeable 71.2°F (21.8°C), indicating a minimal shift from May's 67.6°F (19.8°C). Weather in June »Weather in July
July in San Clemente, California, is a moderately hot summer month, with an average temperature ranging between min 62.2°F (16.8°C) and max 75.6°F (24.2°C). Entering July, San Clemente's average high-temperature reads a moderately hot 75.6°F (24.2°C), indicating a close resemblance to the previous month's climate. Weather in July »Weather in August
The last month of the summer, August, is another warm month in San Clemente, California, with an average temperature varying between 77.2°F (25.1°C) and 63.5°F (17.5°C). In the transition from July to August, San Clemente reports an average high-temperature of a still moderately hot 77.2°F (25.1°C), indicating a close resemblance to the prior month. Weather in August »Weather in September
September, the first month of the autumn in San Clemente, is still a warm month, with temperature in the range of an average low of 63.5°F (17.5°C) and an average high of 77.4°F (25.2°C). September stands out as San Clemente's warmest month, with an average high-temperature of 77.4°F (25.2°C) and a low-temperature of 63.5°F (17.5°C). Weather in September »Weather in October
October, like September, is an agreeable autumn month in San Clemente, California, with an average temperature fluctuating between 73.2°F (22.9°C) and 60.4°F (15.8°C). San Clemente, California, records an average high-temperature of an agreeable 73.2°F (22.9°C) as October arrives, nearly mirroring the previous month's climate. Weather in October »Weather in November
The last month of the autumn, November, is another pleasant month in San Clemente, California, with an average temperature varying between 55.6°F (13.1°C) and 68.7°F (20.4°C). A minor adjustment in San Clemente's average high-temperature is noted with the start of November, touching a still pleasant 68.7°F (20.4°C) from October's 73.2°F (22.9°C). Weather in November »Weather in December
The first month of the winter, December, is still a refreshing month in San Clemente, California, with an average temperature ranging between min 50.4°F (10.2°C) and max 62.6°F (17°C). The month of December, characterized by an average high of 62.6°F (17°C) and a low of 50.4°F (10.2°C), is recognized as the coldest. Weather in December »Updated: Jul 12, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Throughout the year, there are 51.1 rainfall days, and 3.66" (93mm) of precipitation is accumulated.
January through March, November and December, with an average maximum UV index of 4, are months with the lowest UV index.
The month with the coldest seawater is February, with an average ocean temperature of 58.8°F (14.9°C).
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.
June is the most humid month, with an average relative humidity of 75%.
The month with the least rainfall is June, when the rain falls for 1.4 days and typically collects 0.08" (2mm) of precipitation.
June has the longest days of the year in San Clemente, with an average of 14h and 18min of daylight.
The months with the most sunshine are July and August, with an average of 11.8h of sunshine.
The months with the highest UV index are July through September, with an average maximum UV index of 6.
August is the month with the warmest seawater, with an average ocean temperature of 68.2°F (20.1°C).
The warmest period tends to be September, when average temperatures fluctuate between a high of 77.4°F (25.2°C) and a low of 63.5°F (17.5°C).
The least humid month is November, with an average relative humidity of 60%.
December, recording an average high temperature of 62.6°F (17°C) and a low temperature of 50.4°F (10.2°C), is San Clemente's coldest month.
The month with the most rainfall is December, when the rain falls for 4.8 days and typically aggregates up to 0.71" (18mm) of precipitation.
December has the shortest days of the year, with an average of 10h and 0min of daylight.
With an average of 6.5h of sunshine, December has the least sunshine of the year.
Average temperature
San Clemente, CA
The warmest month (with the highest average high temperature) is September (77.4°F).
The month with the lowest average high temperature is December (62.6°F).
The months with the highest average low temperature are August and September (63.5°F).
The coldest month (with the lowest average low temperature) is February (49.6°F).
Average pressure
San Clemente, CA
- Average pressure in January:
30.09"Hg - Average pressure in February:
30.05"Hg - Average pressure in March:
30.02"Hg - Average pressure in April:
29.96"Hg - Average pressure in May:
29.92"Hg - Average pressure in June:
29.88"Hg
- Average pressure in July:
29.91"Hg - Average pressure in August:
29.89"Hg - Average pressure in September:
29.89"Hg - Average pressure in October:
29.94"Hg - Average pressure in November:
30.02"Hg - Average pressure in December:
30.06"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed
San Clemente, CA
- Average wind speed in January:
5.2mph - Average wind speed in February:
5.7mph - Average wind speed in March:
5.8mph - Average wind speed in April:
6.2mph - Average wind speed in May:
6mph - Average wind speed in June:
5.2mph
- Average wind speed in July:
5mph - Average wind speed in August:
4.9mph - Average wind speed in September:
4.9mph - Average wind speed in October:
5mph - Average wind speed in November:
5.2mph - Average wind speed in December:
5.5mph
The windiest month (with the highest average wind speed) is April (6.2mph).
The calmest months (with the lowest average wind speed) are August and September (4.9mph).
Average humidity
San Clemente, CA
The month with the highest relative humidity is June (75%).
The month with the lowest relative humidity is November (60%).
Average rainfall
San Clemente, CA
- Average rainfall in January:
0.35" - Average rainfall in February:
0.47" - Average rainfall in March:
0.39" - Average rainfall in April:
0.31" - Average rainfall in May:
0.24" - Average rainfall in June:
0.08"
The wettest month (with the highest rainfall) is December (0.71").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days
San Clemente, CA
- Average rainfall days in January:
4.8 days - Average rainfall days in February:
5.3 days - Average rainfall days in March:
7.3 days - Average rainfall days in April:
5.8 days - Average rainfall days in May:
4.6 days - Average rainfall days in June:
1.4 days
- Average rainfall days in July:
4.3 days - Average rainfall days in August:
2.8 days - Average rainfall days in September:
3.3 days - Average rainfall days in October:
3.5 days - Average rainfall days in November:
3.2 days - Average rainfall days in December:
4.8 days
The month with the highest number of rainy days is March (7.3 days).
The month with the least rainy days is June (1.4 days).
Average sea temperature
San Clemente, CA
The best month for swimming (with the highest average sea temperature) is August (68.3°F).
The coldest months (with the lowest average sea temperature) are January and February (58.9°F).
Average daylight / Average sunshine
San Clemente, CA
- Average daylight in January:
10h and 12min - 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 54min - Average daylight in June:
14h and 18min
- Average daylight in July:
14h and 6min - Average daylight in August:
13h and 24min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 18min - Average daylight in November:
10h and 24min - 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 42min - Average sunshine in February:
6h and 36min - Average sunshine in March:
8h and 24min - Average sunshine in April:
10h and 30min - Average sunshine in May:
10h and 36min - Average sunshine in June:
11h and 36min
- Average sunshine in July:
11h and 48min - Average sunshine in August:
11h and 48min - Average sunshine in September:
10h and 12min - Average sunshine in October:
8h and 18min - Average sunshine in November:
6h and 54min - Average sunshine in December:
6h and 30min
The months with the most sunshine are July and August (Average sunshine: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 6h and 30min).
Average sunshine days
San Clemente, CA
- Average sunshine days in January:
24.8 days - Average sunshine days in February:
21.6 days - Average sunshine days in March:
22.3 days - Average sunshine days in April:
22.8 days - Average sunshine days in May:
23 days - Average sunshine days in June:
25.4 days
- Average sunshine days in July:
24.3 days - Average sunshine days in August:
25.3 days - Average sunshine days in September:
23.8 days - Average sunshine days in October:
26 days - Average sunshine days in November:
25.2 days - Average sunshine days in December:
24.3 days
The month with the most sunshine days is October (26 days).
The month with the least sunshine days is February (21.6 days).
Average UV index
San Clemente, CA
The months with the highest UV index are July, August and September (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 4).
Average cloud cover
San Clemente, CA
The months with the most cloud cover are March and May (Cloud cover 27).
The month with the least cloud cover is August (Cloud cover 11).
Average visibility
San Clemente, 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).
