Tanjungbalai climate — normals and trends
Tanjungbalai (Indonesia) has a tropical rainforest climate (Af) under the Köppen-Geiger classification. Its mean annual temperature is 26.7 °C and it receives 2,633 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 (27.3 °C on average) and the coldest is January (26.0 °C). Rainfall peaks in October.
Tanjungbalai averages 0 frost days, 236 hot days (≥ 30 °C) and 314 rainy days per year.
Tanjungbalai 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 34.9 °C (on 28 July 2024) and the coldest 20.4 °C (on 19 February 1977).
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
TanjungbalaiNorth Sumatra
- coords
- 2.97°, 99.80°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
26.7°C
Average daily high
30.4°C
Average daily low
24.2°C
Annual rainfall
2,633mm
Sunshine / day
10.0h
Mean relative humidity
87%
Average peak wind
9.8km/h
Seasonal range
1.3°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
236 d/yr
Rainy days (≥ 1 mm)
314 d/yr
Annual snowfall
0.0 cm
Average feels-like high
37.2 °C
Average feels-like low
28.9 °C
Average peak gust
23.8 km/h
Tropical nights (≥ 20 °C)
365 d/yr
Solar radiation
19.2 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
34.9 °C
28 July 2024
Coldest day
20.4 °C
19 February 1977
Wettest day
142 mm
27 November 2025
Windiest day
29.1 km/h
18 December 2021
Strongest gust
49.0 km/h
7 May 1986
Hottest feels-like
43.1 °C
25 March 2010
Coldest feels-like
21.4 °C
19 February 1977
Sunniest day
12.1 h
3 July 1949
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 | 30.0 °C | +0.4 °C | 275 mm | +93 mm |
| Feb | 30.8 °C | +0.6 °C | 247 mm | +104 mm |
| Mar | 31.4 °C | +0.7 °C | 247 mm | +67 mm |
| Apr | 31.2 °C | +0.3 °C | 349 mm | +136 mm |
| May | 32.0 °C | +0.9 °C | 245 mm | +31 mm |
| Jun | 31.7 °C | +0.6 °C | 111 mm | -35 mm |
| Jul | 31.9 °C | +1.1 °C | 73 mm | -87 mm |
| Aug | 31.6 °C | +1.0 °C | 168 mm | -39 mm |
| Sep | 31.1 °C | +0.8 °C | 161 mm | -112 mm |
| Oct | 30.7 °C | +0.7 °C | 345 mm | +26 mm |
| Nov | 29.6 °C | -0.1 °C | 425 mm | +110 mm |
| Dec | 29.6 °C | +0.1 °C | 302 mm | +22 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 Tanjungbalai?
Tanjungbalai has a tropical rainforest climate (Köppen Af). Over 1940-2025, the average annual temperature is 26.7 °C and it receives 2,633 mm of precipitation per year.
What is the hottest day ever recorded in Tanjungbalai?
The hottest day measured in Tanjungbalai between 1940 and 2025 was 28 July 2024, reaching 34.9 °C.
What is the coldest day in Tanjungbalai?
The coldest day measured in Tanjungbalai between 1940 and 2025 was 19 February 1977, at 20.4 °C.
Does it snow in Tanjungbalai?
Almost never: Tanjungbalai sees virtually no snow, with about 0 frost days per year.
Has the climate of Tanjungbalai warmed?
Yes: Tanjungbalai warmed by +2.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Tanjungbalai?
The wettest day measured in Tanjungbalai between 1940 and 2025 was 27 November 2025, with 142 mm of rain in 24 hours.
What was the windiest day in Tanjungbalai?
The windiest day measured in Tanjungbalai between 1940 and 2025 was 18 December 2021, with winds reaching 29.1 km/h.
What is the warmest month in Tanjungbalai?
The warmest month in Tanjungbalai is May (27.3 °C on average); the coldest is January (26.0 °C).
How much does it rain in Tanjungbalai?
Tanjungbalai receives on average 2,633 mm of precipitation per year, spread over about 314 rainy days.
Is it sunny in Tanjungbalai?
Tanjungbalai gets on average 10.0 hours of sunshine per day, roughly 3,650 hours per year over 1940-2025.
Are there tropical nights in Tanjungbalai?
Yes: Tanjungbalai has on average 365 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Tanjungbalai?
In Tanjungbalai, between 1940 and 2025, the highest apparent temperature reached 43.1 °C on 25 March 2010, and the lowest was 21.4 °C on 19 February 1977.
Compare Tanjungbalai with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Tanjungbalai