San Diego weather and climate
San Diego weather and climate
Day
21 °C
Night
12 °C
Sea
16 °C
Precipitation
23 mm
in month
Rainy days
3 days
in month
Daylight
13 hours
average
Sunshine
9 hours
average
Humidity
68 %
Day
21 °C
Night
12 °C
Sea
16 °C
Precipitation
23 mm
in month
Rainy days
3 days
in month
Daylight
13 hours
average
Sunshine
9 hours
average
Humidity
68 %
Weather charts for San Diego
We make the most from 40 years of historical weather data to predict the best weather conditions.
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Weather overview for San Diego
Weather overview
San Diego (United States of America) in general has a tropical climate. Temperatures during the day are in the range from 19 °C (66 °F) in December to 27 °C (80 °F) in August. The driest month is August with just 0 days of rain, on the contrary, the month when it rains the most is February with 6 days of rain. The highest night temperatures could be experienced in August with 18 °C (65 °F), the lowest in December with 9 °C (48 °F). Sea temperatures are in the following range: 15 °C (59 °F) in February to 21 °C (69 °F) in August.
January weather
The rise of the number of rainy days can be observed, with its value being 6 days in San Diego, and the rainfall amount rises similarly to the previous month as well, its value is 54 mm (2.13 in). The sea temperature continues to descent, its value is 15 °C (59 °F). The minimum of the humidity can be noticed in this month.
February weather
The minimum of the sea temperature can be noticed in February in San Diego. The number of rainy days is on its maximum, the value of this measure is 6 days, and the maximum of the rainfall amount is observable too, with its value being 60 mm (2.38 in). The number of sun hours (without clouds) rise's start could be observed, the value of this measure is 8 hours.
March weather
The day temperature rise's start could be observed, with its value of 20 °C (67 °F) in San Diego, and the beginning of the rise of the night temperature could be noticed as well. The number of rainy days descent's start could be observed, its value is 6 days, and the rainfall amount descent's start could be observed as well. The number of sun hours (without clouds) rises similarly to the previous month, the value of this measure is 8 hours.
April weather
The sea temperature rise's start could be observed, with its value being 16 °C (61 °F) in San Diego, while the rise of the day temperature can be observed, its value is 21 °C (70 °F). The number of rainy days continues to descent, with its value of 3 days, and the rainfall amount descents similarly to the previous month as well, the value of this measure is 23 mm (0.91 in). The rise of the night temperature can be observed, with its value being 12 °C (54 °F). The maximum of the wind speed is observable in April.
May weather
The rise of the day temperature can be observed, with its value of 22 °C (71 °F) in San Diego, and the sea temperature rises similarly to the previous month as well, the value of this measure is 17 °C (63 °F). The number of rainy days descents similarly to the previous month, its value is 1 day. The dry season continues. The night temperature rises similarly to the previous month, with its value of 14 °C (58 °F). The beginning of the descent of the number of sun hours (without clouds) could be noticed in May.
June weather
The tourist season is about to start in San Diego, while the dry season is taking place this month. The day temperature rises similarly to the previous month, with its value being 23 °C (74 °F), and the rise of the sea temperature can be observed as well, its value is 18 °C (65 °F). The number of rainy days continues to descent. The rise of the night temperature can be observed, with its value being 16 °C (60 °F).
July weather
The tourist season is taking place in July in San Diego. The day temperature continues to rise, with its value being 26 °C (78 °F), and the sea temperature rises similarly to the previous month as well, with its value of 20 °C (68 °F). The minimum of the rainfall amount is observable in this month. The rise of the night temperature can be observed, with its value of 18 °C (64 °F). The number of sun hours (without clouds) is on its maximum, with its value being 10 hours.
August weather
The tourist season continues in San Diego. The maximum of the sea temperature is observable, its value is 21 °C (69 °F), and the maximum of the day temperature is observable as well, with its value being 27 °C (80 °F). The number of rainy days reaches its minimum in August. The night temperature is on its maximum, with its value of 18 °C (65 °F). The number of sun hours (without clouds) starts to descent, with its value being 10 hours.
September weather
The number of rainy days rise's start could be observed in San Diego. The ongoing dry season is noticeable, and the ongoing tourist season is noticeable too this month. The descent of the number of sun hours (without clouds) can be observed, with its value of 8 hours. The night temperature descent's start could be observed.
October weather
The day temperature starts to descent, with its value being 24 °C (76 °F) in San Diego, and the sea temperature descent's start could be observed too in this month. The tourist season is close to its peak. The number of rainy days rises similarly to the previous month, with its value of 2 days, while the rainfall amount starts to rise, its value is 11 mm (0.44 in). The descent of the number of sun hours (without clouds) can be observed, with its value of 8 hours.
November weather
The day temperature descents similarly to the previous month, its value is 22 °C (72 °F) in San Diego, and the descent of the sea temperature can be observed as well, with its value being 17 °C (63 °F). The rise of the rainfall amount can be observed, its value is 31 mm (1.23 in), and the rise of the number of rainy days can be observed as well, with its value being 4 days. The night temperature descents similarly to the previous month, its value is 11 °C (52 °F).
December weather
The minimum of the day temperature is observable, with its value being 19 °C (66 °F) in San Diego, while the sea temperature continues to descent, its value is 16 °C (60 °F). The number of rainy days rises similarly to the previous month, with its value being 5 days. The night temperature is on its minimum in this month. The number of sun hours (without clouds) is on its minimum, its value is 7 hours. The minimum of the wind speed is observable.
FAQs
What is the humidity in January in San Diego?
Humidity in January in San Diego is 65 %.
How many sunny hours can I expect in San Diego in February?
There is an average length of sunshine of 8 hours per day in February in San Diego.
How windy is it in San Diego in March?
In March in San Diego, there will be an average wind scale of 3.
Is there a dry season in San Diego in April?
Yes, there is a dry season in April in San Diego with just 3 days during the month being rainy.
How many days of precipitation on average can I expect in May in San Diego?
In May in San Diego, we can expect 1 day to be rainy, that is, days when precipitation exceeds 2 mm (0.08 in). Converted to days of the week, this means that it will occur on an average of 0.3 days of the week, or in general - 5 % days.
Are there good conditions to visit in June in San Diego?
June is a good month to visit San Diego. You can expect just 0 days of rain during the month, taking an umbrella is not necessary. There are some people, who may feel a slight chill at 23 °C (74 °F), but others will feel perfectly fine. A sea temperature of 18 °C (65 °F) can seem colder to some, but others will call it refreshing. The temperature of 16 °C (60 °F) at night may make it better to dine inside or to put on more clothes for a dinner outside.
What is the sea temperature in San Diego in July?
In July in San Diego expect the sea to be warm at 20 °C (68 °F). At this sea temperature, swimming probably won't be the best experience. You probably won't like to stay in water for a long time. On the other hand, there are a minority of people who seek these conditions.
What is the temperature in San Diego during the day in August?
In August in San Diego, the average daily temperatures will be 27 °C (80 °F). The ideal temperature for enjoying sunbathing by the water and a good temperature for other activities. For some people, it will be too hot in the direct sunlight and the stay may not be so pleasant. Don't forget to pack flip-flops, sunscreen, and a hand fan if necessary - it may come in handy.
Is it hot in September in San Diego?
In San Diego in September, you will enjoy nice warm weather, but it will also be pleasant and you probably won't feel hot.
Is there a wet season in October in San Diego?
No, there is no wet season in October in San Diego - you can expect 2 days of rain during the month.
What is the night temperature in San Diego in November?
The average night temperature in San Diego in November is 11 °C (52 °F). Nights can be cooler, morning running can be refreshing but choose appropriate clothing, evening outdoor sitting can be pleasant but you can also be cold.