May Pen climate — normals and trends
May Pen has a tropical savanna climate, averaging 25.0 °C annually with 938 mm of rain per year.
Climate normals · ERA5
May PenClarendon
- coords
- 17.96°, -77.25°
- period
- 1940–2025 · 86 yrs
The normals for this period
The average of every indicator across the whole window: temperature, water, sky, wind and notable days.
Mean daily temperature
25.0°C
Average daily high
29.5°C
Average daily low
21.7°C
Annual rainfall
938mm
Sunshine / day
11.0h
Mean relative humidity
78%
Average peak wind
14.5km/h
Seasonal range
3.4°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
145 d/yr
Rainy days (≥ 1 mm)
180 d/yr
Annual snowfall
0.0 cm
Average feels-like high
32.7 °C
Average feels-like low
24.8 °C
Average peak gust
40.5 km/h
Tropical nights (≥ 20 °C)
303 d/yr
Solar radiation
20.2 MJ/m²
Has the climate changed?
What the yearly averages say about warming here, and whether the slope is statistically solid.
+2.3 °C
since 1940
+0.3 °C per decade · r² = 0.76 · 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).
Climate month by month
How an average year unfolds: when it rains, when it turns hot, when the sun is out.
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
The most extreme days ever measured here, then the year-by-year detail.
Hottest day
36.8 °C
20 August 2023
Coldest day
13.0 °C
15 January 1956
Wettest day
284 mm
11 September 2004
Windiest day
73.0 km/h
11 September 2004
Strongest gust
175.0 km/h
11 September 2004
Hottest feels-like
42.1 °C
20 August 2023
Coldest feels-like
12.7 °C
16 January 1956
Sunniest day
12.8 h
20 June 2019
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and compare it with the normal: warmer, drier, more extreme?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 28.8 °C | +0.8 °C | 9 mm | -14 mm |
| Feb | 28.8 °C | +0.6 °C | 20 mm | -5 mm |
| Mar | 29.7 °C | +0.8 °C | 34 mm | -3 mm |
| Apr | 30.0 °C | +0.4 °C | 88 mm | +22 mm |
| May | 31.0 °C | +1.2 °C | 69 mm | -60 mm |
| Jun | 31.3 °C | +1.3 °C | 39 mm | -53 mm |
| Jul | 32.8 °C | +1.6 °C | 33 mm | -38 mm |
| Aug | 33.4 °C | +2.0 °C | 57 mm | -43 mm |
| Sep | 33.4 °C | +2.8 °C | 93 mm | -44 mm |
| Oct | 30.5 °C | +1.1 °C | 497 mm | +348 mm |
| Nov | 29.5 °C | +0.7 °C | 43 mm | -34 mm |
| Dec | 29.4 °C | +1.2 °C | 15 mm | -18 mm |
The year's extremes
What was the weather like that day?
The weather actually measured on a given date, anywhere in the covered window.
Climate at a glance
What these normals say about the place, in a few sentences, and the notions needed to read them.
May Pen (Jamaica) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 25.0 °C and it receives 938 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 (26.7 °C on average) and the coldest is January (23.3 °C). Rainfall peaks in October.
May Pen averages 0 frost days, 145 hot days (≥ 30 °C) and 180 rainy days per year.
May Pen has warmed by +2.3 °C between 1940 and 2025, or +0.27 °C per decade. This trend is statistically significant.
The hottest day of the period reached 36.8 °C (on 20 August 2023) and the coldest 13.0 °C (on 15 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.
Compare May Pen with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around May Pen
Other cities — Jamaica
Frequently asked questions
What is the climate of May Pen?
May Pen has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 25.0 °C and it receives 938 mm of precipitation per year.
What is the hottest day ever recorded in May Pen?
The hottest day measured in May Pen between 1940 and 2025 was 20 August 2023, reaching 36.8 °C.
What is the coldest day in May Pen?
The coldest day measured in May Pen between 1940 and 2025 was 15 January 1956, at 13.0 °C.
Does it snow in May Pen?
Almost never: May Pen sees virtually no snow, with about 0 frost days per year.
Has the climate of May Pen warmed?
Yes: May Pen warmed by +2.3 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in May Pen?
The wettest day measured in May Pen between 1940 and 2025 was 11 September 2004, with 284 mm of rain in 24 hours.
What was the windiest day in May Pen?
The windiest day measured in May Pen between 1940 and 2025 was 11 September 2004, with winds reaching 73.0 km/h.
What is the warmest month in May Pen?
The warmest month in May Pen is July (26.7 °C on average); the coldest is January (23.3 °C).
How much does it rain in May Pen?
May Pen receives on average 938 mm of precipitation per year, spread over about 180 rainy days.
Is it sunny in May Pen?
May Pen gets on average 11.0 hours of sunshine per day, roughly 4,015 hours per year over 1940-2025.
Are there tropical nights in May Pen?
Yes: May Pen has on average 303 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in May Pen?
In May Pen, between 1940 and 2025, the highest apparent temperature reached 42.1 °C on 20 August 2023, and the lowest was 12.7 °C on 16 January 1956.
These forecasts and records come from our own weather API. Developer documentation →