San Rafael del Sur climate — normals and trends
San Rafael del Sur (Nicaragua) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 27.6 °C and it receives 1,325 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 (29.3 °C on average) and the coldest is October (26.3 °C). Rainfall peaks in October.
San Rafael del Sur averages 0 frost days, 296 hot days (≥ 30 °C) and 138 rainy days per year.
San Rafael del Sur has warmed by +1.4 °C between 1940 and 2025, or +0.16 °C per decade. This trend is statistically significant.
The hottest day of the period reached 37.5 °C (on 16 April 2005) and the coldest 19.8 °C (on 11 February 1976).
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 del SurManagua Department
- coords
- 11.85°, -86.44°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
27.6°C
Average daily high
31.6°C
Average daily low
24.5°C
Annual rainfall
1,325mm
Sunshine / day
10.9h
Mean relative humidity
70%
Average peak wind
20.1km/h
Seasonal range
3.0°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
296 d/yr
Rainy days (≥ 1 mm)
138 d/yr
Annual snowfall
0.0 cm
Average feels-like high
34.9 °C
Average feels-like low
26.9 °C
Average peak gust
41.6 km/h
Tropical nights (≥ 20 °C)
364 d/yr
Solar radiation
20.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.4 °C
since 1940
+0.2 °C per decade · r² = 0.54 · 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
37.5 °C
16 April 2005
Coldest day
19.8 °C
11 February 1976
Wettest day
213 mm
11 June 1978
Windiest day
44.9 km/h
13 February 1955
Strongest gust
82.4 km/h
13 February 1955
Hottest feels-like
42.6 °C
25 May 1988
Coldest feels-like
16.4 °C
6 January 1956
Sunniest day
12.5 h
25 May 1949
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 | 32.2 °C | +0.3 °C | 5 mm | +3 mm |
| Feb | 32.8 °C | +0.3 °C | 1 mm | -0 mm |
| Mar | 34.3 °C | +0.9 °C | 0 mm | -3 mm |
| Apr | 34.7 °C | +0.8 °C | 3 mm | -17 mm |
| May | 34.1 °C | +1.7 °C | 57 mm | -114 mm |
| Jun | 31.2 °C | +0.5 °C | 229 mm | -3 mm |
| Jul | 32.6 °C | +1.2 °C | 27 mm | -69 mm |
| Aug | 33.2 °C | +1.7 °C | 48 mm | -85 mm |
| Sep | 31.8 °C | +1.5 °C | 205 mm | -62 mm |
| Oct | 30.1 °C | +0.4 °C | 407 mm | +98 mm |
| Nov | 31.4 °C | +0.9 °C | 41 mm | -43 mm |
| Dec | 32.3 °C | +0.8 °C | 9 mm | +1 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 del Sur?
San Rafael del Sur has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 27.6 °C and it receives 1,325 mm of precipitation per year.
What is the hottest day ever recorded in San Rafael del Sur?
The hottest day measured in San Rafael del Sur between 1940 and 2025 was 16 April 2005, reaching 37.5 °C.
What is the coldest day in San Rafael del Sur?
The coldest day measured in San Rafael del Sur between 1940 and 2025 was 11 February 1976, at 19.8 °C.
Does it snow in San Rafael del Sur?
Almost never: San Rafael del Sur sees virtually no snow, with about 0 frost days per year.
Has the climate of San Rafael del Sur warmed?
Yes: San Rafael del Sur warmed by +1.4 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in San Rafael del Sur?
The wettest day measured in San Rafael del Sur between 1940 and 2025 was 11 June 1978, with 213 mm of rain in 24 hours.
What was the windiest day in San Rafael del Sur?
The windiest day measured in San Rafael del Sur between 1940 and 2025 was 13 February 1955, with winds reaching 44.9 km/h.
What is the warmest month in San Rafael del Sur?
The warmest month in San Rafael del Sur is April (29.3 °C on average); the coldest is October (26.3 °C).
How much does it rain in San Rafael del Sur?
San Rafael del Sur receives on average 1,325 mm of precipitation per year, spread over about 138 rainy days.
Is it sunny in San Rafael del Sur?
San Rafael del Sur gets on average 10.9 hours of sunshine per day, roughly 3,979 hours per year over 1940-2025.
Are there tropical nights in San Rafael del Sur?
Yes: San Rafael del Sur has on average 364 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in San Rafael del Sur?
In San Rafael del Sur, between 1940 and 2025, the highest apparent temperature reached 42.6 °C on 25 May 1988, and the lowest was 16.4 °C on 6 January 1956.
Compare San Rafael del Sur with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around San Rafael del Sur