San Luis climate — normals and trends
San Luis (Cuba) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 24.7 °C and it receives 964 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 July (26.6 °C on average) and the coldest is January (22.6 °C). Rainfall peaks in May.
San Luis averages 0 frost days, 199 hot days (≥ 30 °C) and 169 rainy days per year.
San Luis has warmed by +1.5 °C between 1940 and 2025, or +0.17 °C per decade. This trend is statistically significant.
The hottest day of the period reached 37.6 °C (on 4 July 1990) and the coldest 10.2 °C (on 24 February 1978).
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 LuisSantiago de Cuba Province
- coords
- 20.19°, -75.85°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
24.7°C
Average daily high
30.0°C
Average daily low
20.7°C
Annual rainfall
964mm
Sunshine / day
10.9h
Mean relative humidity
78%
Average peak wind
11.6km/h
Seasonal range
4.0°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
199 d/yr
Rainy days (≥ 1 mm)
169 d/yr
Annual snowfall
0.0 cm
Average feels-like high
33.6 °C
Average feels-like low
23.8 °C
Average peak gust
32.8 km/h
Tropical nights (≥ 20 °C)
247 d/yr
Solar radiation
19.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.5 °C
since 1940
+0.2 °C per decade · r² = 0.53 · 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
37.6 °C
4 July 1990
Coldest day
10.2 °C
24 February 1978
Wettest day
160 mm
26 April 1987
Windiest day
48.1 km/h
8 October 1963
Strongest gust
127.8 km/h
29 October 2025
Hottest feels-like
42.0 °C
31 August 2023
Coldest feels-like
9.2 °C
24 February 1978
Sunniest day
13.1 h
11 June 1945
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 | 28.6 °C | +0.5 °C | 5 mm | -14 mm |
| Feb | 29.5 °C | +0.8 °C | 9 mm | -13 mm |
| Mar | 30.0 °C | +0.4 °C | 32 mm | -2 mm |
| Apr | 29.5 °C | -0.7 °C | 88 mm | +20 mm |
| May | 31.6 °C | +1.3 °C | 49 mm | -96 mm |
| Jun | 31.9 °C | +0.9 °C | 83 mm | -45 mm |
| Jul | 32.1 °C | +0.1 °C | 75 mm | -19 mm |
| Aug | 32.7 °C | +0.7 °C | 81 mm | -32 mm |
| Sep | 31.4 °C | +0.3 °C | 214 mm | +81 mm |
| Oct | 29.7 °C | -0.1 °C | 297 mm | +169 mm |
| Nov | 29.5 °C | +0.7 °C | 40 mm | -16 mm |
| Dec | 29.1 °C | +1.0 °C | 13 mm | -10 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 Luis?
San Luis has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 24.7 °C and it receives 964 mm of precipitation per year.
What is the hottest day ever recorded in San Luis?
The hottest day measured in San Luis between 1940 and 2025 was 4 July 1990, reaching 37.6 °C.
What is the coldest day in San Luis?
The coldest day measured in San Luis between 1940 and 2025 was 24 February 1978, at 10.2 °C.
Does it snow in San Luis?
Almost never: San Luis sees virtually no snow, with about 0 frost days per year.
Has the climate of San Luis warmed?
Yes: San Luis warmed by +1.5 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in San Luis?
The wettest day measured in San Luis between 1940 and 2025 was 26 April 1987, with 160 mm of rain in 24 hours.
What was the windiest day in San Luis?
The windiest day measured in San Luis between 1940 and 2025 was 8 October 1963, with winds reaching 48.1 km/h.
What is the warmest month in San Luis?
The warmest month in San Luis is July (26.6 °C on average); the coldest is January (22.6 °C).
How much does it rain in San Luis?
San Luis receives on average 964 mm of precipitation per year, spread over about 169 rainy days.
Is it sunny in San Luis?
San Luis 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 Luis?
Yes: San Luis has on average 247 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in San Luis?
In San Luis, between 1940 and 2025, the highest apparent temperature reached 42.0 °C on 31 August 2023, and the lowest was 9.2 °C on 24 February 1978.
Compare San Luis with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around San Luis