San Rafael Abajo climate — normals and trends
San Rafael Abajo (Costa Rica) has a tropical rainforest climate (Af) under the Köppen-Geiger classification. Its mean annual temperature is 21.2 °C and it receives 5,941 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is April (21.9 °C on average) and the coldest is October (20.8 °C). Rainfall peaks in October.
San Rafael Abajo averages 0 frost days, 0 hot days (≥ 30 °C) and 340 rainy days per year.
San Rafael Abajo has warmed by +1.3 °C between 1940 and 2025, or +0.15 °C per decade. This trend is statistically significant.
The hottest day of the period reached 30.4 °C (on 13 March 1998) and the coldest 13.0 °C (on 5 February 1945).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
San Rafael AbajoSan José
- coords
- 9.83°, -84.29°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
21.2°C
Average daily high
25.1°C
Average daily low
18.4°C
Annual rainfall
5,941mm
Sunshine / day
8.9h
Mean relative humidity
88%
Average peak wind
6.0km/h
Seasonal range
1.1°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
340 d/yr
Annual snowfall
0.0 cm
Average feels-like high
29.6 °C
Average feels-like low
20.3 °C
Average peak gust
29.4 km/h
Tropical nights (≥ 20 °C)
21 d/yr
Solar radiation
16.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.3 °C
since 1940
+0.2 °C per decade · r² = 0.58 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
30.4 °C
13 March 1998
Coldest day
13.0 °C
5 February 1945
Wettest day
334 mm
30 October 1949
Windiest day
15.6 km/h
24 February 1989
Strongest gust
57.6 km/h
28 May 2008
Hottest feels-like
37.8 °C
7 September 2009
Coldest feels-like
11.1 °C
27 February 1944
Sunniest day
12.5 h
20 May 1959
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 25.3 °C | +0.1 °C | 238 mm | +90 mm |
| Feb | 25.5 °C | -0.3 °C | 189 mm | +87 mm |
| Mar | 26.5 °C | +0.1 °C | 87 mm | -45 mm |
| Apr | 26.1 °C | 0.0 °C | 325 mm | +58 mm |
| May | 25.9 °C | +0.5 °C | 605 mm | -21 mm |
| Jun | 25.4 °C | +0.4 °C | 740 mm | +13 mm |
| Jul | 25.8 °C | +1.0 °C | 622 mm | -151 mm |
| Aug | 25.8 °C | +1.0 °C | 635 mm | -150 mm |
| Sep | 25.7 °C | +0.9 °C | 827 mm | +99 mm |
| Oct | 25.0 °C | +0.6 °C | 772 mm | -17 mm |
| Nov | 25.4 °C | +1.1 °C | 458 mm | -99 mm |
| Dec | 25.3 °C | +0.7 °C | 353 mm | +45 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of San Rafael Abajo?
San Rafael Abajo has a tropical rainforest climate (Köppen Af). Over 1940-2025, the average annual temperature is 21.2 °C and it receives 5,941 mm of precipitation per year.
What is the hottest day ever recorded in San Rafael Abajo?
The hottest day measured in San Rafael Abajo between 1940 and 2025 was 13 March 1998, reaching 30.4 °C.
What is the coldest day in San Rafael Abajo?
The coldest day measured in San Rafael Abajo between 1940 and 2025 was 5 February 1945, at 13.0 °C.
Does it snow in San Rafael Abajo?
Almost never: San Rafael Abajo sees virtually no snow, with about 0 frost days per year.
Has the climate of San Rafael Abajo warmed?
Yes: San Rafael Abajo warmed by +1.3 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in San Rafael Abajo?
The wettest day measured in San Rafael Abajo between 1940 and 2025 was 30 October 1949, with 334 mm of rain in 24 hours.
What was the windiest day in San Rafael Abajo?
The windiest day measured in San Rafael Abajo between 1940 and 2025 was 24 February 1989, with winds reaching 15.6 km/h.
What is the warmest month in San Rafael Abajo?
The warmest month in San Rafael Abajo is April (21.9 °C on average); the coldest is October (20.8 °C).
How much does it rain in San Rafael Abajo?
San Rafael Abajo receives on average 5,941 mm of precipitation per year, spread over about 340 rainy days.
Is it sunny in San Rafael Abajo?
San Rafael Abajo gets on average 8.9 hours of sunshine per day, roughly 3,249 hours per year over 1940-2025.
Are there tropical nights in San Rafael Abajo?
Yes: San Rafael Abajo has on average 21 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in San Rafael Abajo?
In San Rafael Abajo, between 1940 and 2025, the highest apparent temperature reached 37.8 °C on 7 September 2009, and the lowest was 11.1 °C on 27 February 1944.
Compare San Rafael Abajo with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around San Rafael Abajo