Puerto San José climate — normals and trends
Puerto San José (Guatemala) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 26.1 °C and it receives 1,555 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 (26.9 °C on average) and the coldest is January (25.5 °C). Rainfall peaks in September.
Puerto San José averages 0 frost days, 6 hot days (≥ 30 °C) and 192 rainy days per year.
Puerto San José 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 32.0 °C (on 18 April 2004) and the coldest 19.2 °C (on 9 January 1956).
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
Puerto San JoséEscuintla
- coords
- 13.92°, -90.82°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
26.1°C
Average daily high
27.9°C
Average daily low
24.3°C
Annual rainfall
1,555mm
Sunshine / day
10.7h
Mean relative humidity
78%
Average peak wind
13.5km/h
Seasonal range
1.4°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
6 d/yr
Rainy days (≥ 1 mm)
192 d/yr
Annual snowfall
0.0 cm
Average feels-like high
33.0 °C
Average feels-like low
27.4 °C
Average peak gust
25.0 km/h
Tropical nights (≥ 20 °C)
364 d/yr
Solar radiation
20.5 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.4 °C
since 1940
+0.2 °C per decade · r² = 0.70 · 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
32.0 °C
18 April 2004
Coldest day
19.2 °C
9 January 1956
Wettest day
233 mm
13 July 1950
Windiest day
44.6 km/h
29 May 2010
Strongest gust
68.4 km/h
28 January 1988
Hottest feels-like
38.7 °C
5 August 2023
Coldest feels-like
16.8 °C
9 January 1956
Sunniest day
12.4 h
12 July 1943
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 | 28.5 °C | +1.0 °C | 4 mm | -2 mm |
| Feb | 28.9 °C | +1.1 °C | 17 mm | +12 mm |
| Mar | 29.0 °C | +0.7 °C | 12 mm | -1 mm |
| Apr | 29.7 °C | +1.1 °C | 18 mm | -19 mm |
| May | 29.5 °C | +1.2 °C | 78 mm | -72 mm |
| Jun | 28.7 °C | +0.9 °C | 385 mm | +87 mm |
| Jul | 29.3 °C | +1.2 °C | 89 mm | -99 mm |
| Aug | 29.1 °C | +1.1 °C | 123 mm | -91 mm |
| Sep | 28.7 °C | +1.2 °C | 180 mm | -143 mm |
| Oct | 28.3 °C | +0.9 °C | 246 mm | -8 mm |
| Nov | 28.5 °C | +0.9 °C | 28 mm | -29 mm |
| Dec | 28.0 °C | +0.4 °C | 50 mm | +38 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 Puerto San José?
Puerto San José has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 26.1 °C and it receives 1,555 mm of precipitation per year.
What is the hottest day ever recorded in Puerto San José?
The hottest day measured in Puerto San José between 1940 and 2025 was 18 April 2004, reaching 32.0 °C.
What is the coldest day in Puerto San José?
The coldest day measured in Puerto San José between 1940 and 2025 was 9 January 1956, at 19.2 °C.
Does it snow in Puerto San José?
Almost never: Puerto San José sees virtually no snow, with about 0 frost days per year.
Has the climate of Puerto San José warmed?
Yes: Puerto San José warmed by +1.4 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Puerto San José?
The wettest day measured in Puerto San José between 1940 and 2025 was 13 July 1950, with 233 mm of rain in 24 hours.
What was the windiest day in Puerto San José?
The windiest day measured in Puerto San José between 1940 and 2025 was 29 May 2010, with winds reaching 44.6 km/h.
What is the warmest month in Puerto San José?
The warmest month in Puerto San José is April (26.9 °C on average); the coldest is January (25.5 °C).
How much does it rain in Puerto San José?
Puerto San José receives on average 1,555 mm of precipitation per year, spread over about 192 rainy days.
Is it sunny in Puerto San José?
Puerto San José gets on average 10.7 hours of sunshine per day, roughly 3,905 hours per year over 1940-2025.
Are there tropical nights in Puerto San José?
Yes: Puerto San José has on average 364 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Puerto San José?
In Puerto San José, between 1940 and 2025, the highest apparent temperature reached 38.7 °C on 5 August 2023, and the lowest was 16.8 °C on 9 January 1956.
Compare Puerto San José with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Puerto San José