Sasmuan climate — normals and trends
Sasmuan (Philippines) has a tropical monsoon climate (Am) under the Köppen-Geiger classification. Its mean annual temperature is 25.9 °C and it receives 1,940 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 (27.9 °C on average) and the coldest is January (24.0 °C). Rainfall peaks in August.
Sasmuan averages 0 frost days, 184 hot days (≥ 30 °C) and 201 rainy days per year.
Sasmuan has warmed by +1.6 °C between 1940 and 2025, or +0.19 °C per decade. This trend is statistically significant.
The hottest day of the period reached 38.5 °C (on 10 May 1979) and the coldest 15.1 °C (on 15 January 1974).
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
SasmuanCentral Luzon
- coords
- 14.94°, 120.62°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
25.9°C
Average daily high
30.0°C
Average daily low
22.6°C
Annual rainfall
1,940mm
Sunshine / day
9.9h
Mean relative humidity
80%
Average peak wind
12.9km/h
Seasonal range
3.9°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
184 d/yr
Rainy days (≥ 1 mm)
201 d/yr
Annual snowfall
0.0 cm
Average feels-like high
34.6 °C
Average feels-like low
26.3 °C
Average peak gust
35.2 km/h
Tropical nights (≥ 20 °C)
334 d/yr
Solar radiation
17.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.6 °C
since 1940
+0.2 °C per decade · r² = 0.63 · 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
38.5 °C
10 May 1979
Coldest day
15.1 °C
15 January 1974
Wettest day
279 mm
16 December 2015
Windiest day
55.8 km/h
26 December 1947
Strongest gust
143.3 km/h
11 October 1989
Hottest feels-like
43.0 °C
17 July 1998
Coldest feels-like
14.2 °C
10 January 1971
Sunniest day
12.3 h
1 June 1957
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 | 29.1 °C | +0.6 °C | 56 mm | +31 mm |
| Feb | 29.5 °C | -0.1 °C | 88 mm | +65 mm |
| Mar | 31.4 °C | +0.1 °C | 45 mm | +14 mm |
| Apr | 34.2 °C | +1.4 °C | 25 mm | -18 mm |
| May | 33.5 °C | +1.1 °C | 149 mm | -6 mm |
| Jun | 30.6 °C | +0.1 °C | 404 mm | +135 mm |
| Jul | 28.7 °C | -0.8 °C | 492 mm | +146 mm |
| Aug | 30.4 °C | +1.3 °C | 319 mm | -37 mm |
| Sep | 29.2 °C | -0.2 °C | 517 mm | +215 mm |
| Oct | 30.2 °C | +0.6 °C | 297 mm | +86 mm |
| Nov | 29.9 °C | +0.7 °C | 195 mm | +89 mm |
| Dec | 29.4 °C | +0.9 °C | 133 mm | +60 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 Sasmuan?
Sasmuan has a tropical monsoon climate (Köppen Am). Over 1940-2025, the average annual temperature is 25.9 °C and it receives 1,940 mm of precipitation per year.
What is the hottest day ever recorded in Sasmuan?
The hottest day measured in Sasmuan between 1940 and 2025 was 10 May 1979, reaching 38.5 °C.
What is the coldest day in Sasmuan?
The coldest day measured in Sasmuan between 1940 and 2025 was 15 January 1974, at 15.1 °C.
Does it snow in Sasmuan?
Almost never: Sasmuan sees virtually no snow, with about 0 frost days per year.
Has the climate of Sasmuan warmed?
Yes: Sasmuan warmed by +1.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Sasmuan?
The wettest day measured in Sasmuan between 1940 and 2025 was 16 December 2015, with 279 mm of rain in 24 hours.
What was the windiest day in Sasmuan?
The windiest day measured in Sasmuan between 1940 and 2025 was 26 December 1947, with winds reaching 55.8 km/h.
What is the warmest month in Sasmuan?
The warmest month in Sasmuan is May (27.9 °C on average); the coldest is January (24.0 °C).
How much does it rain in Sasmuan?
Sasmuan receives on average 1,940 mm of precipitation per year, spread over about 201 rainy days.
Is it sunny in Sasmuan?
Sasmuan gets on average 9.9 hours of sunshine per day, roughly 3,614 hours per year over 1940-2025.
Are there tropical nights in Sasmuan?
Yes: Sasmuan has on average 334 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Sasmuan?
In Sasmuan, between 1940 and 2025, the highest apparent temperature reached 43.0 °C on 17 July 1998, and the lowest was 14.2 °C on 10 January 1971.
Compare Sasmuan with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Sasmuan