Bais climate — normals and trends
Bais (Philippines) has a tropical monsoon climate (Am) under the Köppen-Geiger classification. Its mean annual temperature is 26.1 °C and it receives 1,964 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 (27.4 °C on average) and the coldest is January (25.3 °C). Rainfall peaks in July.
Bais averages 0 frost days, 113 hot days (≥ 30 °C) and 242 rainy days per year.
Bais has warmed by +1.8 °C between 1940 and 2025, or +0.22 °C per decade. This trend is statistically significant.
The hottest day of the period reached 35.0 °C (on 15 May 1987) and the coldest 18.8 °C (on 5 February 1976).
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
BaisCentral Visayas
- coords
- 9.59°, 123.12°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
26.1°C
Average daily high
29.2°C
Average daily low
23.8°C
Annual rainfall
1,964mm
Sunshine / day
10.2h
Mean relative humidity
83%
Average peak wind
13.6km/h
Seasonal range
2.1°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
113 d/yr
Rainy days (≥ 1 mm)
242 d/yr
Annual snowfall
0.0 cm
Average feels-like high
34.4 °C
Average feels-like low
27.8 °C
Average peak gust
31.1 km/h
Tropical nights (≥ 20 °C)
365 d/yr
Solar radiation
18.5 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.8 °C
since 1940
+0.2 °C per decade · r² = 0.73 · 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
35.0 °C
15 May 1987
Coldest day
18.8 °C
5 February 1976
Wettest day
168 mm
3 April 1957
Windiest day
59.3 km/h
17 December 2021
Strongest gust
118.1 km/h
17 December 2021
Hottest feels-like
41.7 °C
14 April 2016
Coldest feels-like
19.8 °C
21 January 1961
Sunniest day
12.3 h
28 May 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 | 29.4 °C | +1.2 °C | 150 mm | +73 mm |
| Feb | 29.4 °C | +0.6 °C | 147 mm | +87 mm |
| Mar | 30.1 °C | +0.2 °C | 121 mm | +66 mm |
| Apr | 31.3 °C | +0.3 °C | 49 mm | -12 mm |
| May | 30.5 °C | -0.1 °C | 257 mm | +112 mm |
| Jun | 29.7 °C | +0.3 °C | 339 mm | +102 mm |
| Jul | 29.3 °C | +0.7 °C | 359 mm | +80 mm |
| Aug | 29.3 °C | +0.7 °C | 424 mm | +159 mm |
| Sep | 29.4 °C | +0.8 °C | 353 mm | +85 mm |
| Oct | 29.7 °C | +0.9 °C | 463 mm | +210 mm |
| Nov | 29.5 °C | +0.6 °C | 359 mm | +209 mm |
| Dec | 29.8 °C | +1.3 °C | 135 mm | +21 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 Bais?
Bais has a tropical monsoon climate (Köppen Am). Over 1940-2025, the average annual temperature is 26.1 °C and it receives 1,964 mm of precipitation per year.
What is the hottest day ever recorded in Bais?
The hottest day measured in Bais between 1940 and 2025 was 15 May 1987, reaching 35.0 °C.
What is the coldest day in Bais?
The coldest day measured in Bais between 1940 and 2025 was 5 February 1976, at 18.8 °C.
Does it snow in Bais?
Almost never: Bais sees virtually no snow, with about 0 frost days per year.
Has the climate of Bais warmed?
Yes: Bais warmed by +1.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Bais?
The wettest day measured in Bais between 1940 and 2025 was 3 April 1957, with 168 mm of rain in 24 hours.
What was the windiest day in Bais?
The windiest day measured in Bais between 1940 and 2025 was 17 December 2021, with winds reaching 59.3 km/h.
What is the warmest month in Bais?
The warmest month in Bais is April (27.4 °C on average); the coldest is January (25.3 °C).
How much does it rain in Bais?
Bais receives on average 1,964 mm of precipitation per year, spread over about 242 rainy days.
Is it sunny in Bais?
Bais gets on average 10.2 hours of sunshine per day, roughly 3,723 hours per year over 1940-2025.
Are there tropical nights in Bais?
Yes: Bais has on average 365 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Bais?
In Bais, between 1940 and 2025, the highest apparent temperature reached 41.7 °C on 14 April 2016, and the lowest was 19.8 °C on 21 January 1961.
Compare Bais with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Bais