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San Diego weather

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EuropeanECMWF
19°
Partly cloudy
Feels 20° · Wind 5 km/h · Humidity 87%
AmericanNOAA GFS
20°
Mainly clear
Feels 20° · Wind 4 km/h · Humidity 73%
GermanDWD ICON
20°
Partly cloudy
Feels 21° · Wind 6 km/h · Humidity 80%

Latest for San Diego: European (ECMWF): 19° Partly cloudy · American (NOAA GFS): 20° Mainly clear · German (DWD ICON): 20° Partly cloudy.

The weather map: all three models at once

European, American, German side by side around San Diego and nearby towns.Live rain radar →
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Hourly forecast: next 14 hours

consensus of the three models

Rain in the next 24 hours, model by model

each model's own hourly precipitation, side by side

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10-day forecast, out to 14 days

where the models agree, and where they split

Heading to San Diego? San Diego, USA, sits at 32.7°N in a subtropical climate zone. Before you lock in outdoor plans, compare how the three global models - European (ECMWF), American (GFS) and German (ICON) - forecast San Diego right now. Where they agree you can trust it; the days they split are exactly when a single weather app is least reliable. For a beach trip the rain and wind columns below matter most - that is what makes or breaks a day by the sea.

Best time to visit San Diego

The most comfortable time to visit San Diego is usually July, August, September and October, when daytime highs sit in the pleasant 24-33°C range and the heaviest February rain is behind you.

San Diego weather by month

what to expect in San Diego through the year, 1991-2020 normals, San Diego Lindbergh Field (WMO)

Here is San Diego's typical weather in each month: the average daytime high and overnight low in °C, how each month feels, and the wettest month marked. Use it to plan any trip to San Diego by season.

Jan
19°
10°
Mild
Feb
19°
11°
Mild
Wettest
Mar
19°
12°
Mild
Apr
20°
14°
Mild
May
21°
16°
Mild
Jun
22°
17°
Warm
Jul
24°
19°
Warm
Aug
25°
20°
Warm
Sep
25°
19°
Warm
Oct
24°
16°
Warm
Nov
22°
13°
Warm
Dec
19°
10°
Mild

San Diego compared with Toronto

30-year averages: daytime highs month by month, rain and sunlight

Warmer through the year

+8°C

average daytime high: San Diego 22°C, Toronto 14°C

Rain over a year

−73%

San Diego 249 mm, Toronto 924 mm

Sunlight vs a clear sky

80% vs 67%

solar energy reaching the ground as a share of a cloudless day, averaged over the year (not sunshine hours)

San DiegoTorontoaverage daytime high, °C, 1991-2020
January, Toronto: 0°CJanuary, San Diego: 19°C (+19°C)February, Toronto: 1°CFebruary, San Diego: 19°C (+18°C)March, Toronto: 5°CMarch, San Diego: 19°C (+14°C)April, Toronto: 12°CApril, San Diego: 20°C (+8°C)May, Toronto: 19°CMay, San Diego: 21°C (+2°C)June, Toronto: 24°CJune, San Diego: 22°C (−2°C)July, Toronto: 27°CJuly, San Diego: 24°C (−3°C)August, Toronto: 26°CAugust, San Diego: 25°C (−1°C)September, Toronto: 22°CSeptember, San Diego: 25°C (+3°C)October, Toronto: 15°COctober, San Diego: 24°C (+9°C)November, Toronto: 8°CNovember, San Diego: 22°C (+14°C)December, Toronto: 3°CDecember, San Diego: 19°C (+16°C)

On 30-year averages San Diego runs 8°C warmer than Toronto, with every month between −3°C and +19°C. Over a year it gets 73% less rain than Toronto.

Month by month in numbers
MonthSan DiegoTorontoDifferenceSunlight, San DiegoSunlight, Toronto
January19°C0°C+19°C83%56%
February19°C1°C+18°C82%57%
March19°C5°C+14°C81%64%
April20°C12°C+8°C81%67%
May21°C19°C+2°C74%72%
June22°C24°C−2°C69%76%
July24°C27°C−3°C75%79%
August25°C26°C−1°C80%79%
September25°C22°C+3°C82%76%
October24°C15°C+9°C81%63%
November22°C8°C+14°C83%60%
December19°C3°C+16°C82%54%

Daytime highs and lows on this page are 1991-2020 averages. San Diego: station normals from San Diego Lindbergh Field (WMO), rain included. Toronto: station normals from Toronto City (WMO); rain is the CHELSA 1981-2010 climatology on a 1 km grid. Sunlight vs a clear sky is NASA POWER's long-term average of the solar energy reaching the ground as a share of a cloudless day; it compares cloudiness and is not a count of sunshine hours. Toronto stands in for Canada here; other cities have their own climate tables.

Common questions

When is the best time to visit San Diego?
The most comfortable time to visit San Diego is usually July, August, September and October, when daytime highs sit in the pleasant 24-33°C range and the heaviest February rain is behind you.
Will it rain in San Diego during my trip?
Rain is where forecasts disagree most. Instead of trusting one app, the comparison above lines up the European, American and German models for San Diego - check your dates and look for the days they agree; those are the ones you can plan around.
Which forecast is most accurate for San Diego?
For destinations abroad we compare three open global models (ECMWF, GFS and ICON) and show you where they disagree, so you can judge the confidence yourself.
How much warmer is San Diego than Toronto?
On 30-year averages (1991-2020) the daytime high in San Diego is about 8°C warmer than in Toronto (22°C against 14°C), with the monthly gap between -3°C and 19°C.

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