How warm is it in Bangkok in January?

Daytime highs averaged 33.0 °C, night-time lows 20.4 °C. The highest value of the past 10 years was 38.1 °C (24 Jan 2020), the lowest 12.6 °C (10 Jan 2026).

How often does it rain in Bangkok in January?

On average there were 1.8 rain days (at least 1 mm) with 12.1 mm of precipitation in total. In 4 of 10 years there was no rain day at all.

How warm is the sea in Bangkok in January?

The sea temperature averaged 26.0 °C (open-sea point approx. 30 km from the town).

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Bangkok weather in January: temperature & rain

Photo: Diliff · CC BY-SA 3.0

🇹🇭 Weather in Bangkok in January

This is what the weather in Bangkok (Thailand) was like in January over the years 2017–2026.

Key facts at a glance

Prevailing weather: Sunny

Avg. daytime high

33.0 °C

31.2 °C – 36.4 °C

Avg. night-time low

20.4 °C

17.7 °C – 23.7 °C

Avg. rain days in period

1.8

6 % of days · ≥ 1.0 mm

Avg. precipitation in period

12.1 mm

0.0 mm – 53.5 mm

Avg. cloud cover

44 %

This data source has no sunshine hours – average cloud cover is shown instead.

Avg. sea temperature

26.0 °C

Sea temperature available for 2 of 10 years.

Extremes: Highest temperature 38.1 °C (24 Jan 2020) · Lowest temperature 12.6 °C (10 Jan 2026) · Avg. daily peak wind 15 km/h

Weather mix of all days

123Sunny
106Partly cloudy
63Cloudy
11Light rain
7Rain

Summary

On average 33.0 °C during the day and 20.4 °C at night.
On average 1.8 rain days (Rain day = at least 1.0 mm of precipitation) with 12.1 mm of precipitation in total.
In 4 of 10 years there was not a single rain day.
The sea averaged 26.0 °C.
Prevailing weather: Sunny.
Warmest year: 2020 (avg. 36.4 °C), coolest: 2017 (avg. 31.2 °C).
Wettest year: 2018 (53.5 mm), driest: 2021 (0.0 mm).
Extremes: 38.1 °C on 24 Jan 2020 and 12.6 °C on 10 Jan 2026.

Overall values from all 10 years. How is this calculated?

Temperatures per year

Average over your travel period

Precipitation & rain days

Year by year

2026
Avg. max32.4°Avg. min18.2°
Rain days
0 Rain days
Precipitation
1.7 mm
Avg. cloud cover
24 % cloudy
Sea temperature
26.5 °C
Max 35.6 °C · Min 12.6 °C
2025
Avg. max33.0°Avg. min17.7°
Rain days
1 Rain days
Precipitation
1.4 mm
Avg. cloud cover
40 % cloudy
Sea temperature
25.5 °C
Max 36.9 °C · Min 12.9 °C
2024
Avg. max34.8°Avg. min22.1°
Rain days
0 Rain days
Precipitation
1.0 mm
Avg. cloud cover
40 % cloudy
Sea temperature
–
Max 36.6 °C · Min 19.2 °C
2023
Avg. max31.8°Avg. min18.9°
Rain days
2 Rain days
Precipitation
3.9 mm
Avg. cloud cover
55 % cloudy
Sea temperature
–
Max 35.5 °C · Min 14.3 °C
2022
Avg. max33.7°Avg. min21.2°
Rain days
4 Rain days
Precipitation
15.6 mm
Avg. cloud cover
20 % cloudy
Sea temperature
–
Max 36.2 °C · Min 18.7 °C
2021
Avg. max32.1°Avg. min18.5°
Rain days
0 Rain days
Precipitation
0.0 mm
Avg. cloud cover
40 % cloudy
Sea temperature
–
Max 36.5 °C · Min 13.1 °C
2020
Avg. max36.4°Avg. min23.7°
Rain days
3 Rain days
Precipitation
6.2 mm
Avg. cloud cover
35 % cloudy
Sea temperature
–
Max 38.1 °C · Min 20.2 °C
2019
Avg. max33.1°Avg. min21.1°
Rain days
0 Rain days
Precipitation
1.6 mm
Avg. cloud cover
50 % cloudy
Sea temperature
–
Max 36.2 °C · Min 17.1 °C
2018
Avg. max31.7°Avg. min21.3°
Rain days
4 Rain days
Precipitation
53.5 mm
Avg. cloud cover
65 % cloudy
Sea temperature
–
Max 34.9 °C · Min 15.1 °C
2017
Avg. max31.2°Avg. min21.3°
Rain days
4 Rain days
Precipitation
36.4 mm
Avg. cloud cover
73 % cloudy
Sea temperature
–
Max 34.0 °C · Min 18.1 °C

Frequently asked questions

How warm is it in Bangkok in January?: Daytime highs averaged 33.0 °C, night-time lows 20.4 °C. The highest value of the past 10 years was 38.1 °C (24 Jan 2020), the lowest 12.6 °C (10 Jan 2026).
How often does it rain in Bangkok in January?: On average there were 1.8 rain days (at least 1 mm) with 12.1 mm of precipitation in total. In 4 of 10 years there was no rain day at all.
How warm is the sea in Bangkok in January?: The sea temperature averaged 26.0 °C (open-sea point approx. 30 km from the town).

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Data sources

Weather data: Data obtained from the NASA Langley Research Center (LaRC) POWER Project funded through the NASA Earth Science/Applied Science Program
Reanalysis (weather model constrained by observations) on a coarse grid of about 50 km. Values represent a large area and can differ from local conditions, especially on islands, coasts and in mountains. Snow depth is the model value for the grid cell, not the depth on the slopes. No sunshine duration.
Reanalysis (weather model constrained by observations)
Reanalysis values represent a grid cell (approx. 25–50 km) and may differ from local measurements on coasts, islands and in mountains.
Sea temperature: MUR SST data were provided by JPL under support by NASA MEaSUREs program; accessed via NOAA CoastWatch ERDDAP
Daily multi-scale ultra-high resolution (≈ 1 km) analysis of satellite measurements (infrared, microwave) and in-situ data. Represents the foundation temperature below the daily warm surface layer. (Satellite and in-situ analysis); Sea measuring point approx. 30 km from the location (13.510, 100.610)
Place search: Natural Earth (public domain) · GeoNames (CC BY 4.0) / OpenStreetMap (ODbL)