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Climate · San José

San José in May

Warm and wet, as the days lengthen.

Typical weather, averaged over 30 years

May in San José is warm: highs near 80°F, lows near 65°F. Rain falls on about six days a week, more often as the month goes on, and the days lengthen by 10 minutes from the first week to the last.May in San José is warm: highs near 27°C, lows near 18°C. Rain falls on about six days a week, more often as the month goes on, and the days lengthen by 10 minutes from the first week to the last.

High
80°F27°Caverage
Low
65°F18°Caverage
Wet days
6a week · 92% of days
Daylight
12h 35mon average

Is May a good time to visit San José?

A good month, just outside San José's best months, which run from January to February.

How we judge it: every month is scored on how close its typical high comes to the range from 70°F to 80°F, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.How we judge it: every month is scored on how close its typical high comes to the range from 21°C to 27°C, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.

How May sits in the year

week by week

Temperature

Highs near 80°F in May, against 77°F to 83°F through the year.Highs near 27°C in May, against 25°C to 28°C through the year.

Chance of a wet day

92% of days in May, against 23% to 99% through the year.

Cloud cover

84% cover in May, against 57% to 84% through the year.

Daylight

12h 35m in May, against 11h 33m to 12h 42m through the year.

Week by week, lightly smoothed, with May shaded. The olive line marks the best months. Hover or tap a week for its figures.

Either side

  1. April83°28°low 64°low 18°4 wet days a weekRain on about four days a week.
  2. May80°27°low 65°low 18°6 wet days a weekRain on about six days a week.
  3. June79°26°low 64°low 18°7 wet days a weekRain on almost every day.

Where San José sits, in May

America/Costa Rica
this place
typical high in May 40°F4°C95°F35°C
Sunrise, mid-May
5:15 AMsets 5:50 PM
Above the sea
1,160 mupland
Latitude
9.9°Nnorthern hemisphere
Nearest of ours
Pérez Zeledón75 km south-east

The land around San José, shaded by its typical high in May, the planning map's own layer. Hover the map for the figure at that spot; tap it on a phone. Clock times are local, for the 15th.

Elsewhere in Costa Rica in May

high · low · wet days
See May on the planning mapThe whole year in San José

Typical weather, averaged over 30 years (1995–2024), from the 11 km grid square nearest San José. Temperatures are adjusted against 66 weather stations: daytime highs read about 3.1°F cold in the source data and are raised to match, and both highs and lows are adjusted for the town's height (1,160 m) against the climate model's (1,273 m).Temperatures are adjusted against 66 weather stations: daytime highs read about 1.7°C cold in the source data and are raised to match, and both highs and lows are adjusted for the town's height (1,160 m) against the climate model's (1,273 m). Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not. Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.

Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not.

Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.