Weather in San Jose in September 2017

Check the weather in San Jose in September before you book your next holiday in Costa Rica. Long-term weather averages give the best indication of the weather in September 2017 and include figures for temperature, sunshine and rainfall plus sunrise & sunset times for San Jose, Costa Rica.

Weather in San Jose in September

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec All months

  • 24°C maximum daytime temperature in September in San Jose24
    24°C max day temperature
  • 6 hours of sunshine per day (49% of daylight hours) in September in San Jose6
    6 hours of sunshine per day
  • 24 days with some rainfall in September in San Jose24
    24 days with some rainfall
  • 17°C minimum night-time temperature in September in San Jose17
    17°C min night temperature
  • 12 hours of daylight per day in September in San Jose12
    12 hours of daylight per day
  • Low heat & humidity in September in San JoseL
    Low heat & humidity
  • 372 mm monthly rainfall in September in San Jose372
    372 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in September in San Jose11
    11+ (Extreme) UV index

The average maximum daytime temperature in San Jose in September is a warm 24°C (75°F) with low heat & humidity. There are usually 6 hours of bright sunshine each day, which represents 49% of the 12 hours of daylight.

Expect 372mm (14.6 inches) of rainfall across the whole of September with 24 days with some rain falling. Maximum UV levels will be extreme (11+ UV index) at midday when the skies are clear. The average night-time temperature is usually a comfortable 17°C (63°F).

Metric (°C / mm)  |  Imperial (°F / inches)

More about San Jose weather

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San Jose sunrise & sunset times for September 2017

Browse the sunrise & sunset times for San Jose in September 2017. Select a month to view San Jose sunrise & sunset times for the next twelve months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st September 2017 05:27 17:45
Saturday, 2nd September 2017 05:27 17:45
Sunday, 3rd September 2017 05:27 17:44
Monday, 4th September 2017 05:27 17:43
Tuesday, 5th September 2017 05:27 17:43
Wednesday, 6th September 2017 05:27 17:42
Thursday, 7th September 2017 05:27 17:42
Friday, 8th September 2017 05:27 17:41
Saturday, 9th September 2017 05:27 17:40
Sunday, 10th September 2017 05:26 17:40
Monday, 11th September 2017 05:26 17:39
Tuesday, 12th September 2017 05:26 17:38
Wednesday, 13th September 2017 05:26 17:38
Thursday, 14th September 2017 05:26 17:37
Friday, 15th September 2017 05:26 17:37
Saturday, 16th September 2017 05:26 17:36
Sunday, 17th September 2017 05:26 17:35
Monday, 18th September 2017 05:26 17:35
Tuesday, 19th September 2017 05:26 17:34
Wednesday, 20th September 2017 05:26 17:33
Thursday, 21st September 2017 05:26 17:33
Friday, 22nd September 2017 05:25 17:32
Saturday, 23rd September 2017 05:25 17:32
Sunday, 24th September 2017 05:25 17:31
Monday, 25th September 2017 05:25 17:30
Tuesday, 26th September 2017 05:25 17:30
Wednesday, 27th September 2017 05:25 17:29
Thursday, 28th September 2017 05:25 17:28
Friday, 29th September 2017 05:25 17:28
Saturday, 30th September 2017 05:25 17:27
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Check San Jose weather for a particular month by selecting from the list below. Monthly weather guides include figures for temperature, rainfall, sunshine hours and sea temperature plus daily sunrise & sunset times.

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