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Climate - Chula Vista (California)


Average weather, temperature, rainfall, sunshine hours

Flag - United States

Chula Vista, where it's located


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Climate chart - Chula Vista (California)
Climate chart - Chula Vista (California)

The climate of Chula Vista is arid sub-tropical, with very mild, relatively rainy winters and warm, sunny summers.
The city overlooks the southern part of San Diego Bay, and is part of the metropolitan area of ​​the Californian city. Like in San Diego, the climate is very mild due to the cold current flowing in the ocean. Here too, however, the temperature can go up a lot when the Santa Ana wind blows from the deserts areas of the interior. The Santa Ana blows more easily in September and October.
In June, and sometimes in May, the phenomenon called "June gloom" can occur in the morning: this is a kind of cloudy and damp weather, sometimes foggy, accompanied by a sort of drizzle, which is formed on the sea and later can invade the mainland.
The average temperature of the coldest month (December) is of 13.5 °C (56.3 °F), that of the warmest month (August) is of 21.9 °C (71.4 °F). Here are the average temperatures.
Chula Vista - Average temperatures (1991-2020)
MonthMin (°C)Max (°C)Mean (°C)Min (°F)Max (°F)Mean (°F)
January8.119.713.9476757
February9.119.314.2486757.6
March10.819.415.1516759.2
April11.920.216.1536860.9
May14.420.517.5586963.4
June16.221.718.9617166.1
July18.223.720.9657569.7
August18.824.921.9667771.3
September17.825.121.4647770.6
October14.723.819.3587566.7
November10.521.716.1517161
December7.819.213.5466756.3
Year13.221.617.455.870.963.5

Precipitation amounts to 235 millimeters (9.2 inches) per year: it is therefore scarce (although in winter there may be periods of bad weather). It ranges from 0 mm (0 in) in the driest months (from June to September) to 60 mm (2.4 in) in the wettest (February). Here is the average precipitation.
Chula Vista - Average precipitation
MonthMillimetersInchesDays
January451.85
February602.47
March351.45
April150.63
May50.21
June000
July000
August000
September000
October100.41
November150.63
December401.65
Year2359.332

On average, there are around 3,015 sunshine hours per year. Therefore, the sun shines very often. Here are the average sunshine hours per day.
Chula Vista - Sunshine hours
MonthAverageTotal
January7215
February8230
March8250
April8240
May8250
June8240
July10310
August9280
September9270
October8250
November8240
December8250
Year8.33015

In San Diego Bay, the sea temperature ranges between 15 °C (59 °F) and 20.5 °C (69 °F): so, the sea remains a bit cold even in summer. Here are the average sea temperatures.
Chula Vista - Sea temperature
MonthCelsius (°C)Fahrenheit (°F)
January1559
February1559
March15.560
April1660
May1762
June1864
July19.567
August20.569
September20.569
October19.567
November17.564
December1661
Year17.563.5

Chula Vista

Best Time


Having a great climate, Chula Vista can be visited all year round. However, from December to March, it can rain, and it can get a bit cold at night. In May and June, there may be morning mists. In summer, but especially in September and October, there can be very hot days, when the wind blows from the desert.
The best time to go to the beach is from July to October, when the sea is less cold.

Back to California.


Chula Vista - Weather by month

Based on the period 1991-2020
(January - February - March - April - May - June - July - August - September - October - November - December)


January is generally a mild month. The average temperature is of 13.9 °C (57 °F), with a minimum of 8.1 °C (46.5 °F) and a maximum of 19.7 °C (67.5 °F).
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 4 °C (39 °F).
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 26 °C (79 °F).
Rain iconPrecipitation amounts to 45 mm (1.8 in), distributed over 5 days.
The day lasts on average 10 hours and 20 minutes.
Sun iconThere are on average 7 hours of sunshine per day. So, the sun shines 68% of the time.
The average humidity is 64%.
The average wind speed is 11 kph (7 mph).
Sea iconThe average sea temperature is of 15 °C (59.5 °F). Therefore, the sea is cold for swimming.



February is generally a mild month. The average temperature is of 14.2 °C (58 °F), with a minimum of 9.1 °C (48.3 °F) and a maximum of 19.3 °C (66.8 °F).
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 6 °C (43 °F).
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 25.5 °C (78 °F).
Rain iconPrecipitation amounts to 60 mm (2.4 in), distributed over 7 days.
The day lasts on average 11 hours and 5 minutes.
Sun iconThere are on average 8 hours of sunshine per day. So, the sun shines 73% of the time.
The average humidity is 66%.
The average wind speed is 12 kph (7 mph).
Sea iconThe average sea temperature is of 15 °C (59 °F). Therefore, the sea is cold for swimming.



March is generally a very mild month. The average temperature is of 15.1 °C (59 °F), with a minimum of 10.8 °C (51.4 °F) and a maximum of 19.4 °C (67 °F).
Cold thermometer iconOn the coldest nights, which normally occur at the beginning of the month, the temperature usually drops to around 7 °C (44.5 °F).
Warm thermometer iconOn the warmest days, which normally occur at the end of the month, the temperature usually reaches around 26.5 °C (79.5 °F).
Rain iconPrecipitation amounts to 35 mm (1.4 in), distributed over 5 days.
The day lasts on average 12 hours and 0 minutes.
Sun iconThere are on average 8 hours of sunshine per day. So, the sun shines 67% of the time.
The average humidity is 68%.
The average wind speed is 12 kph (8 mph).
Sea iconThe average sea temperature is of 15.5 °C (59.5 °F). Therefore, the sea is cold for swimming.



April is generally a very mild month. The average temperature is of 16.1 °C (61 °F), with a minimum of 11.9 °C (53.5 °F) and a maximum of 20.2 °C (68.4 °F).
Cold thermometer iconOn the coldest nights, which normally occur at the beginning of the month, the temperature usually drops to around 8.5 °C (47.5 °F).
Warm thermometer iconOn the warmest days, which normally occur at the end of the month, the temperature usually reaches around 27.5 °C (81.5 °F).
Rain iconPrecipitation amounts to 15 mm (0.6 in), distributed over 3 days.
The day lasts on average 13 hours and 0 minutes.
Sun iconThere are on average 8 hours of sunshine per day. So, the sun shines 62% of the time.
The average humidity is 67%.
The average wind speed is 13 kph (8 mph).
Sea iconThe average sea temperature is of 16 °C (60.5 °F). Therefore, the sea is cold for swimming.



May is generally a very mild month. The average temperature is of 17.5 °C (63 °F), with a minimum of 14.4 °C (58 °F) and a maximum of 20.5 °C (68.9 °F).
Cold thermometer iconOn the coldest nights, which normally occur at the beginning of the month, the temperature usually drops to around 10 °C (50.5 °F).
Warm thermometer iconOn the warmest days, which normally occur at the end of the month, the temperature usually reaches around 25 °C (77 °F).
Rain iconPrecipitation amounts to only 5 mm (0.2 in), and all occurs in one day.
The day lasts on average 13 hours and 55 minutes.
Sun iconThere are on average 8 hours of sunshine per day. So, the sun shines 57% of the time.
The average humidity is 71%. Hence, the air is normally humid.
The average wind speed is 13 kph (8 mph).
Sea iconThe average sea temperature is of 17 °C (62 °F). Therefore, the sea is cold for swimming.



June is generally a warm month. The average temperature is of 18.9 °C (66 °F), with a minimum of 16.2 °C (61.2 °F) and a maximum of 21.7 °C (71 °F).
Cold thermometer iconOn the coldest nights, the temperature usually drops to around 12 °C (53.5 °F).
Warm thermometer iconOn the warmest days, the temperature usually reaches around 23.5 °C (74 °F).
Rain iconPrecipitation amounts to only 0 mm (0 in), so on average it never rains in the whole month.
The day lasts on average 14 hours and 20 minutes. So the days are long. June 21, the summer solstice, is the longest day of the year in the Northern Hemisphere.
Sun iconThere are on average 8 hours of sunshine per day. So, the sun shines 56% of the time.
The average humidity is 74%. Hence, the air is normally humid.
The average wind speed is 12 kph (8 mph).
Sea iconThe average sea temperature is of 18 °C (64.5 °F). Therefore, the sea is cold for swimming.



July is generally a warm month. The average temperature is of 20.9 °C (70 °F), with a minimum of 18.2 °C (64.7 °F) and a maximum of 23.7 °C (74.6 °F).
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 14 °C (57 °F).
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 26.5 °C (79.5 °F).
Rain iconPrecipitation amounts to only 0 mm (0 in), so on average it never rains in the whole month.
The day lasts on average 14 hours and 0 minutes.
Sun iconThere are on average 10 hours of sunshine per day. So, the sun shines 71% of the time.
The average humidity is 75%. Hence, the air is normally humid.
The average wind speed is 11 kph (7 mph).
Sea iconThe average sea temperature is of 19.5 °C (67.5 °F). Therefore, the sea is very cool for swimming.



August, the warmest month of the year, is generally a warm month. The average temperature is of 21.9 °C (71 °F), with a minimum of 18.8 °C (65.8 °F) and a maximum of 24.9 °C (76.9 °F).
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 15 °C (59 °F).
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 28.5 °C (83.5 °F).
Rain iconPrecipitation amounts to only 0 mm (0 in), so on average it never rains in the whole month.
The day lasts on average 13 hours and 20 minutes.
Sun iconThere are on average 9 hours of sunshine per day. So, the sun shines 68% of the time.
The average humidity is 75%. Hence, the air is normally humid.
The average wind speed is 12 kph (7 mph).
Sea iconThe average sea temperature is of 20.5 °C (69 °F). Therefore, the sea is cool for swimming.



September is generally a warm month. The average temperature is of 21.4 °C (71 °F), with a minimum of 17.8 °C (64 °F) and a maximum of 25.1 °C (77.1 °F).
Cold thermometer iconOn the coldest nights, the temperature usually drops to around 12.5 °C (55 °F).
Warm thermometer iconOn the warmest days, the temperature usually reaches around 32.5 °C (90.5 °F).
Rain iconPrecipitation amounts to only 0 mm (0 in), so on average it never rains in the whole month.
The day lasts on average 12 hours and 20 minutes.
Sun iconThere are on average 9 hours of sunshine per day. So, the sun shines 73% of the time.
The average humidity is 74%. Hence, the air is normally humid.
The average wind speed is 10 kph (6 mph).
Sea iconThe average sea temperature is of 20.5 °C (69 °F). Therefore, the sea is cool for swimming.



October is generally a warm month. The average temperature is of 19.3 °C (67 °F), with a minimum of 14.7 °C (58.5 °F) and a maximum of 23.8 °C (74.9 °F).
Cold thermometer iconOn the coldest nights, which normally occur at the end of the month, the temperature usually drops to around 9.5 °C (49.5 °F).
Warm thermometer iconOn the warmest days, which normally occur at the beginning of the month, the temperature usually reaches around 31.5 °C (88.5 °F).
Rain iconPrecipitation amounts to 10 mm (0.4 in), and all occurs in one day.
The day lasts on average 11 hours and 20 minutes.
Sun iconThere are on average 8 hours of sunshine per day. So, the sun shines 71% of the time.
The average humidity is 70%.
The average wind speed is 10 kph (6 mph).
Sea iconThe average sea temperature is of 19.5 °C (67 °F). Therefore, the sea is very cool for swimming.



November is generally a very mild month. The average temperature is of 16.1 °C (61 °F), with a minimum of 10.5 °C (50.9 °F) and a maximum of 21.7 °C (71.1 °F).
Cold thermometer iconOn the coldest nights, which normally occur at the end of the month, the temperature usually drops to around 6 °C (43 °F).
Warm thermometer iconOn the warmest days, which normally occur at the beginning of the month, the temperature usually reaches around 31.5 °C (88.5 °F).
Rain iconPrecipitation amounts to 15 mm (0.6 in), distributed over 3 days.
The day lasts on average 10 hours and 30 minutes.
Sun iconThere are on average 8 hours of sunshine per day. So, the sun shines 76% of the time.
The average humidity is 61%.
The average wind speed is 10 kph (6 mph).
Sea iconThe average sea temperature is of 17.5 °C (64 °F). Therefore, the sea is cold for swimming.



December, the coldest month of the year, is generally a mild month. The average temperature is of 13.5 °C (56 °F), with a minimum of 7.8 °C (46 °F) and a maximum of 19.2 °C (66.5 °F).
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 3 °C (37.5 °F).
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 26.5 °C (79.5 °F).
Rain iconPrecipitation amounts to 40 mm (1.6 in), distributed over 5 days.
The day lasts on average 10 hours and 0 minutes. December 21, the winter solstice, is the shortest day of the year in the Northern Hemisphere.
Sun iconThere are on average 8 hours of sunshine per day. So, the sun shines 80% of the time.
The average humidity is 64%.
The average wind speed is 11 kph (7 mph).
Sea iconThe average sea temperature is of 16 °C (60.5 °F). Therefore, the sea is cold for swimming.

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