Tomohon climate — normals and trends
Tomohon (Indonesia) has a tropical rainforest climate (Af) under the Köppen-Geiger classification. Its mean annual temperature is 24.1 °C and it receives 3,448 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 (24.5 °C on average) and the coldest is January (23.7 °C). Rainfall peaks in May.
Tomohon averages 0 frost days, 19 hot days (≥ 30 °C) and 318 rainy days per year.
Tomohon has warmed by +2.0 °C between 1940 and 2025, or +0.23 °C per decade. This trend is statistically significant.
The hottest day of the period reached 33.3 °C (on 23 October 2015) and the coldest 17.0 °C (on 3 September 1997).
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
TomohonNorth Sulawesi
- coords
- 1.32°, 124.80°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
24.1°C
Average daily high
27.7°C
Average daily low
21.8°C
Annual rainfall
3,448mm
Sunshine / day
10.4h
Mean relative humidity
89%
Average peak wind
7.5km/h
Seasonal range
0.8°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
19 d/yr
Rainy days (≥ 1 mm)
318 d/yr
Annual snowfall
0.0 cm
Average feels-like high
33.7 °C
Average feels-like low
25.7 °C
Average peak gust
28.6 km/h
Tropical nights (≥ 20 °C)
362 d/yr
Solar radiation
19.3 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.0 °C
since 1940
+0.2 °C per decade · r² = 0.87 · 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
33.3 °C
23 October 2015
Coldest day
17.0 °C
3 September 1997
Wettest day
171 mm
12 January 1965
Windiest day
23.1 km/h
22 January 1968
Strongest gust
73.1 km/h
27 December 1996
Hottest feels-like
41.1 °C
11 December 2020
Coldest feels-like
17.5 °C
3 September 1997
Sunniest day
11.9 h
16 February 1940
Normals computed over complete calendar years 1940–2025.
A specific year
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Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 28.6 °C | +1.7 °C | 581 mm | +270 mm |
| Feb | 28.9 °C | +1.9 °C | 297 mm | +15 mm |
| Mar | 28.5 °C | +1.0 °C | 585 mm | +282 mm |
| Apr | 28.5 °C | +0.6 °C | 525 mm | +193 mm |
| May | 29.0 °C | +1.0 °C | 513 mm | +163 mm |
| Jun | 28.6 °C | +1.0 °C | 403 mm | +87 mm |
| Jul | 29.1 °C | +1.7 °C | 221 mm | -28 mm |
| Aug | 28.2 °C | +0.5 °C | 393 mm | +190 mm |
| Sep | 28.8 °C | +0.7 °C | 348 mm | +121 mm |
| Oct | 28.9 °C | +0.5 °C | 369 mm | +108 mm |
| Nov | 29.1 °C | +1.1 °C | 275 mm | -29 mm |
| Dec | 28.5 °C | +1.2 °C | 308 mm | -2 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 Tomohon?
Tomohon has a tropical rainforest climate (Köppen Af). Over 1940-2025, the average annual temperature is 24.1 °C and it receives 3,448 mm of precipitation per year.
What is the hottest day ever recorded in Tomohon?
The hottest day measured in Tomohon between 1940 and 2025 was 23 October 2015, reaching 33.3 °C.
What is the coldest day in Tomohon?
The coldest day measured in Tomohon between 1940 and 2025 was 3 September 1997, at 17.0 °C.
Does it snow in Tomohon?
Almost never: Tomohon sees virtually no snow, with about 0 frost days per year.
Has the climate of Tomohon warmed?
Yes: Tomohon warmed by +2.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Tomohon?
The wettest day measured in Tomohon between 1940 and 2025 was 12 January 1965, with 171 mm of rain in 24 hours.
What was the windiest day in Tomohon?
The windiest day measured in Tomohon between 1940 and 2025 was 22 January 1968, with winds reaching 23.1 km/h.
What is the warmest month in Tomohon?
The warmest month in Tomohon is May (24.5 °C on average); the coldest is January (23.7 °C).
How much does it rain in Tomohon?
Tomohon receives on average 3,448 mm of precipitation per year, spread over about 318 rainy days.
Is it sunny in Tomohon?
Tomohon gets on average 10.4 hours of sunshine per day, roughly 3,796 hours per year over 1940-2025.
Are there tropical nights in Tomohon?
Yes: Tomohon has on average 362 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Tomohon?
In Tomohon, between 1940 and 2025, the highest apparent temperature reached 41.1 °C on 11 December 2020, and the lowest was 17.5 °C on 3 September 1997.
Compare Tomohon with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Tomohon