Climate and monthly weather forecastOceanside, CA
Climate and monthly weather forecast
Weather in January
January, the same as December, is another refreshing winter month in Oceanside, California, with an average temperature varying between 50.7°F (10.4°C) and 64°F (17.8°C). With the onset of January, the average high-temperature registers at a still refreshing 64°F (17.8°C), subtly different from December's 62.4°F (16.9°C). Weather in January »Weather in February
February, the last month of the winter in Oceanside, is another comfortable month, with an average temperature fluctuating between 63.1°F (17.3°C) and 49.6°F (9.8°C). February's arrival registers an average high-temperature of a still comfortable 63.1°F (17.3°C), closely aligning with the temperature of the previous month. Weather in February »Weather in March
The first month of the spring, March, is still a comfortable month in Oceanside, California, with an average temperature ranging between min 51.3°F (10.7°C) and max 64.6°F (18.1°C). Transitioning into March, Oceanside records an average high-temperature of a still enjoyable 64.6°F (18.1°C), almost identical to February's 63.1°F (17.3°C). Weather in March »Weather in April
April, like March, in Oceanside, California, is another comfortable spring month, with an average temperature fluctuating between 52.7°F (11.5°C) and 66.7°F (19.3°C). Welcoming April, Oceanside notes an average high-temperature of a still refreshing 66.7°F (19.3°C), nearly consistent with March's 64.6°F (18.1°C). Weather in April »Weather in May
May, the last month of the spring in Oceanside, is an agreeable month, with an average temperature fluctuating between 55°F (12.8°C) and 68.2°F (20.1°C). The onset of May marks an average high-temperature of a pleasant 68.2°F (20.1°C), hardly differing from April's 66.7°F (19.3°C). Weather in May »Weather in June
The first month of the summer, June, is still a pleasant month in Oceanside, California, with an average temperature varying between 72.1°F (22.3°C) and 57.7°F (14.3°C). Oceanside's weather in June indicates an average high-temperature of a still agreeable 72.1°F (22.3°C), nearly consistent with the 68.2°F (20.1°C) of May. Weather in June »Weather in July
July in Oceanside, California, is a warm summer month, with temperature in the range of an average low of 63.1°F (17.3°C) and an average high of 76.3°F (24.6°C). As Oceanside transitions into July, the average high-temperature stands at a warm 76.3°F (24.6°C), offering little variation from the preceding month. Weather in July »Weather in August
August, the last month of the summer in Oceanside, is also a moderately hot month, with temperature in the range of an average high of 78.6°F (25.9°C) and an average low of 64.2°F (17.9°C). Oceanside's temperatures tend to reach their peak averages in August, with a high of 78.6°F (25.9°C) and a low of 64.2°F (17.9°C). Weather in August »Weather in September
September, the first month of the autumn in Oceanside, is still a warm month, with temperature in the range of an average high of 77.9°F (25.5°C) and an average low of 63.5°F (17.5°C). The onset of September notes an average high-temperature of a still warm 77.9°F (25.5°C), subtly shifted from August's 78.6°F (25.9°C). Weather in September »Weather in October
October, the same as September, is a moderately hot autumn month in Oceanside, California, with an average temperature ranging between max 73.4°F (23°C) and min 60.3°F (15.7°C). At the start of October, Oceanside's average high-temperature reaches a still moderately hot 73.4°F (23°C), subtly different from the preceding month. Weather in October »Weather in November
November, the last month of the autumn in Oceanside, is also an agreeable month, with temperature in the range of an average low of 55.4°F (13°C) and an average high of 68.5°F (20.3°C). The average high-temperature during November registers at an agreeable 68.5°F (20.3°C), closely corresponding to the preceding month. Weather in November »Weather in December
The first month of the winter, December, is still a comfortable month in Oceanside, California, with temperature in the range of an average low of 50.4°F (10.2°C) and an average high of 62.4°F (16.9°C). With average temperatures fluctuating between a high of 62.4°F (16.9°C) and a low of 50.4°F (10.2°C), December stands out as the coldest month. Weather in December »Updated: Feb 9, 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, in Oceanside, California, there are 68.2 rainfall days, and 9.49" (241mm) of precipitation is accumulated.
January and February, with an average ocean temperature of 58.6°F (14.8°C), are months with the coldest seawater.
January through March, November and December, with an average maximum UV index of 4, are months with the lowest UV index in Oceanside, California.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Oceanside, 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.
The most humid month is June, with an average relative humidity of 73%.
The month with the least rainfall in Oceanside, California, is June, when the rain falls for 2.7 days and typically collects 0.12" (3mm) of precipitation.
The month with the longest days in Oceanside, California, is June, with an average of 14h and 18min of daylight.
The months with the warmest seawater in Oceanside are July and August, with an average ocean temperature of 68°F (20°C).
The months with the most sunshine are July and August, with an average of 12h of sunshine.
The months with the highest UV index are July through September, with an average maximum UV index of 6.
August tends to be the warmest month, with temperatures averaging a daily high of 78.6°F (25.9°C) and a low of 64.2°F (17.9°C).
With an average relative humidity of 60%, November is the least humid month.
The month of December sees the average lowest temperatures in Oceanside, reaching 62.4°F (16.9°C) at the peak and 50.4°F (10.2°C) at the low.
The month with the most rainfall in Oceanside is December, when the rain falls for 6.8 days and typically aggregates up to 1.97" (50mm) of precipitation.
With an average of 10h and 0min of daylight, December has the shortest days of the year.
With an average of 6.6h of sunshine, December has the least sunshine of the year.
Average temperature
Oceanside, CA
The warmest month (with the highest average high temperature) is August (78.6°F).
The month with the lowest average high temperature is December (62.4°F).
The month with the highest average low temperature is August (64.2°F).
The coldest month (with the lowest average low temperature) is February (49.6°F).
Average pressure
Oceanside, CA
- Average pressure in January:
30.09"Hg - Average pressure in February:
30.04"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:
29.88"Hg - Average pressure in October:
29.93"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 months with the lowest atmospheric pressure are June and September (29.88"Hg).
Average wind speed
Oceanside, CA
- Average wind speed in January:
5.1mph - Average wind speed in February:
5.5mph - Average wind speed in March:
5.6mph - Average wind speed in April:
6mph - Average wind speed in May:
6mph - Average wind speed in June:
5.3mph
- Average wind speed in July:
5.2mph - Average wind speed in August:
5mph - Average wind speed in September:
5mph - Average wind speed in October:
4.8mph - Average wind speed in November:
5.1mph - Average wind speed in December:
5.2mph
The windiest months (with the highest average wind speed) are April and May (6mph).
The calmest month (with the lowest average wind speed) is October (4.8mph).
Average humidity
Oceanside, CA
The month with the highest relative humidity is June (73%).
The month with the lowest relative humidity is November (60%).
Average rainfall
Oceanside, CA
- Average rainfall in January:
1.26" - Average rainfall in February:
1.54" - Average rainfall in March:
0.94" - Average rainfall in April:
0.71" - Average rainfall in May:
0.35" - Average rainfall in June:
0.12"
- Average rainfall in July:
0.55" - Average rainfall in August:
0.35" - Average rainfall in September:
0.31" - Average rainfall in October:
0.43" - Average rainfall in November:
0.94" - Average rainfall in December:
1.97"
The wettest month (with the highest rainfall) is December (1.97").
The driest month (with the least rainfall) is June (0.12").
Average rainfall days
Oceanside, CA
- Average rainfall days in January:
6 days - Average rainfall days in February:
6.8 days - Average rainfall days in March:
8 days - Average rainfall days in April:
6.8 days - Average rainfall days in May:
6.5 days - Average rainfall days in June:
2.7 days
- Average rainfall days in July:
5.6 days - Average rainfall days in August:
4.3 days - Average rainfall days in September:
4.9 days - Average rainfall days in October:
4.5 days - Average rainfall days in November:
5.3 days - Average rainfall days in December:
6.8 days
The month with the highest number of rainy days is March (8 days).
The month with the least rainy days is June (2.7 days).
Average sea temperature
Oceanside, CA
The best month for swimming (with the highest average sea temperature) is August (68°F).
The coldest months (with the lowest average sea temperature) are January and February (58.7°F).
Average daylight / Average sunshine
Oceanside, CA
- Average daylight in January:
10h and 18min - 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 18min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 18min - Average daylight in November:
10h and 30min - 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 48min - Average sunshine in February:
6h and 48min - Average sunshine in March:
8h and 42min - Average sunshine in April:
10h and 54min - Average sunshine in May:
11h and 0min - Average sunshine in June:
11h and 48min
- Average sunshine in July:
12h and 0min - Average sunshine in August:
12h and 0min - Average sunshine in September:
10h and 30min - Average sunshine in October:
8h and 48min - Average sunshine in November:
7h and 6min - Average sunshine in December:
6h and 36min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).
Average sunshine days
Oceanside, CA
- Average sunshine days in January:
23.8 days - Average sunshine days in February:
20 days - Average sunshine days in March:
21.2 days - Average sunshine days in April:
21.1 days - Average sunshine days in May:
21.1 days - Average sunshine days in June:
21.8 days
- Average sunshine days in July:
21.3 days - Average sunshine days in August:
21.8 days - Average sunshine days in September:
22.4 days - Average sunshine days in October:
24.2 days - Average sunshine days in November:
22.8 days - Average sunshine days in December:
22.3 days
The month with the most sunshine days is October (24.2 days).
The month with the least sunshine days is February (20 days).
Average UV index
Oceanside, 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
Oceanside, CA
The month with the most cloud cover is December (Cloud cover 25).
The month with the least cloud cover is August (Cloud cover 8).
Average visibility
Oceanside, 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).
