Gapan climate — normals and trends
Gapan (Philippines) has a tropical monsoon climate (Am) under the Köppen-Geiger classification. Its mean annual temperature is 26.3 °C and it receives 2,076 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 May (28.3 °C on average) and the coldest is January (24.4 °C). Rainfall peaks in July.
Gapan averages 0 frost days, 238 hot days (≥ 30 °C) and 196 rainy days per year.
Gapan has warmed by +1.7 °C between 1940 and 2025, or +0.19 °C per decade. This trend is statistically significant.
The hottest day of the period reached 38.3 °C (on 29 May 2021) and the coldest 13.7 °C (on 8 December 1942).
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
GapanCentral Luzon
- coords
- 15.31°, 120.95°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
26.3°C
Average daily high
30.8°C
Average daily low
22.7°C
Annual rainfall
2,076mm
Sunshine / day
10.1h
Mean relative humidity
81%
Average peak wind
13.9km/h
Seasonal range
3.9°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
238 d/yr
Rainy days (≥ 1 mm)
196 d/yr
Annual snowfall
0.0 cm
Average feels-like high
35.7 °C
Average feels-like low
26.6 °C
Average peak gust
35.5 km/h
Tropical nights (≥ 20 °C)
337 d/yr
Solar radiation
18.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.7 °C
since 1940
+0.2 °C per decade · r² = 0.65 · 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
38.3 °C
29 May 2021
Coldest day
13.7 °C
8 December 1942
Wettest day
221 mm
18 October 2015
Windiest day
60.6 km/h
26 December 1947
Strongest gust
121.3 km/h
23 October 1998
Hottest feels-like
45.3 °C
29 May 2021
Coldest feels-like
13.5 °C
8 December 1942
Sunniest day
12.3 h
5 June 1968
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 | 29.7 °C | +0.7 °C | 106 mm | +74 mm |
| Feb | 29.9 °C | 0.0 °C | 106 mm | +81 mm |
| Mar | 31.8 °C | +0.3 °C | 35 mm | +3 mm |
| Apr | 35.1 °C | +1.8 °C | 21 mm | -24 mm |
| May | 34.0 °C | +0.5 °C | 182 mm | +10 mm |
| Jun | 31.9 °C | +0.1 °C | 441 mm | +162 mm |
| Jul | 29.8 °C | -1.0 °C | 444 mm | +79 mm |
| Aug | 31.5 °C | +1.3 °C | 479 mm | +126 mm |
| Sep | 29.8 °C | -0.6 °C | 444 mm | +121 mm |
| Oct | 31.0 °C | +0.6 °C | 331 mm | +94 mm |
| Nov | 30.6 °C | +0.6 °C | 282 mm | +156 mm |
| Dec | 30.2 °C | +1.0 °C | 167 mm | +80 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 Gapan?
Gapan has a tropical monsoon climate (Köppen Am). Over 1940-2025, the average annual temperature is 26.3 °C and it receives 2,076 mm of precipitation per year.
What is the hottest day ever recorded in Gapan?
The hottest day measured in Gapan between 1940 and 2025 was 29 May 2021, reaching 38.3 °C.
What is the coldest day in Gapan?
The coldest day measured in Gapan between 1940 and 2025 was 8 December 1942, at 13.7 °C.
Does it snow in Gapan?
Almost never: Gapan sees virtually no snow, with about 0 frost days per year.
Has the climate of Gapan warmed?
Yes: Gapan warmed by +1.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Gapan?
The wettest day measured in Gapan between 1940 and 2025 was 18 October 2015, with 221 mm of rain in 24 hours.
What was the windiest day in Gapan?
The windiest day measured in Gapan between 1940 and 2025 was 26 December 1947, with winds reaching 60.6 km/h.
What is the warmest month in Gapan?
The warmest month in Gapan is May (28.3 °C on average); the coldest is January (24.4 °C).
How much does it rain in Gapan?
Gapan receives on average 2,076 mm of precipitation per year, spread over about 196 rainy days.
Is it sunny in Gapan?
Gapan gets on average 10.1 hours of sunshine per day, roughly 3,687 hours per year over 1940-2025.
Are there tropical nights in Gapan?
Yes: Gapan has on average 337 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Gapan?
In Gapan, between 1940 and 2025, the highest apparent temperature reached 45.3 °C on 29 May 2021, and the lowest was 13.5 °C on 8 December 1942.
Compare Gapan with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Gapan