Mayagüez climate — normals and trends
Mayagüez (Puerto Rico) has a hot semi-arid climate (BSh) under the Köppen-Geiger classification. Its mean annual temperature is 26.0 °C and it receives 593 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 August (27.3 °C on average) and the coldest is February (24.6 °C). Rainfall peaks in September.
Mayagüez averages 0 frost days, 7 hot days (≥ 30 °C) and 147 rainy days per year.
Mayagüez has warmed by +0.8 °C between 1940 and 2025, or +0.10 °C per decade. This trend is statistically significant.
The hottest day of the period reached 31.3 °C (on 3 July 2024) and the coldest 20.7 °C (on 25 December 1965).
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
MayagüezMayagüez
- coords
- 18.20°, -67.14°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
26.0°C
Average daily high
27.6°C
Average daily low
25.0°C
Annual rainfall
593mm
Sunshine / day
11.4h
Mean relative humidity
77%
Average peak wind
19.6km/h
Seasonal range
2.7°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
7 d/yr
Rainy days (≥ 1 mm)
147 d/yr
Annual snowfall
0.0 cm
Average feels-like high
32.1 °C
Average feels-like low
27.3 °C
Average peak gust
28.9 km/h
Tropical nights (≥ 20 °C)
364 d/yr
Solar radiation
21.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+0.8 °C
since 1940
+0.1 °C per decade · r² = 0.49 · 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
31.3 °C
3 July 2024
Coldest day
20.7 °C
25 December 1965
Wettest day
235 mm
20 September 2017
Windiest day
100.3 km/h
20 September 2017
Strongest gust
154.1 km/h
20 September 2017
Hottest feels-like
39.0 °C
25 September 2024
Coldest feels-like
16.4 °C
16 January 2000
Sunniest day
13.0 h
1 June 1940
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 | 27.4 °C | +1.0 °C | 14 mm | -3 mm |
| Feb | 27.4 °C | +1.2 °C | 20 mm | -1 mm |
| Mar | 27.0 °C | +0.8 °C | 40 mm | +11 mm |
| Apr | 27.2 °C | +0.5 °C | 52 mm | +10 mm |
| May | 28.3 °C | +0.8 °C | 88 mm | +9 mm |
| Jun | 29.3 °C | +0.7 °C | 26 mm | -23 mm |
| Jul | 29.3 °C | +0.4 °C | 42 mm | -9 mm |
| Aug | 29.3 °C | +0.4 °C | 113 mm | +44 mm |
| Sep | 29.2 °C | +0.6 °C | 125 mm | +38 mm |
| Oct | 28.8 °C | +0.6 °C | 74 mm | -4 mm |
| Nov | 28.5 °C | +1.0 °C | 24 mm | -28 mm |
| Dec | 27.7 °C | +0.8 °C | 12 mm | -9 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 Mayagüez?
Mayagüez has a hot semi-arid climate (Köppen BSh). Over 1940-2025, the average annual temperature is 26.0 °C and it receives 593 mm of precipitation per year.
What is the hottest day ever recorded in Mayagüez?
The hottest day measured in Mayagüez between 1940 and 2025 was 3 July 2024, reaching 31.3 °C.
What is the coldest day in Mayagüez?
The coldest day measured in Mayagüez between 1940 and 2025 was 25 December 1965, at 20.7 °C.
Does it snow in Mayagüez?
Almost never: Mayagüez sees virtually no snow, with about 0 frost days per year.
Has the climate of Mayagüez warmed?
Yes: Mayagüez warmed by +0.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Mayagüez?
The wettest day measured in Mayagüez between 1940 and 2025 was 20 September 2017, with 235 mm of rain in 24 hours.
What was the windiest day in Mayagüez?
The windiest day measured in Mayagüez between 1940 and 2025 was 20 September 2017, with winds reaching 100.3 km/h.
What is the warmest month in Mayagüez?
The warmest month in Mayagüez is August (27.3 °C on average); the coldest is February (24.6 °C).
How much does it rain in Mayagüez?
Mayagüez receives on average 593 mm of precipitation per year, spread over about 147 rainy days.
Is it sunny in Mayagüez?
Mayagüez gets on average 11.4 hours of sunshine per day, roughly 4,161 hours per year over 1940-2025.
Are there tropical nights in Mayagüez?
Yes: Mayagüez has on average 364 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Mayagüez?
In Mayagüez, between 1940 and 2025, the highest apparent temperature reached 39.0 °C on 25 September 2024, and the lowest was 16.4 °C on 16 January 2000.
Compare Mayagüez with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Mayagüez