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Colombo in January: Weather, Average temperature and Climate

Planning a trip and want to know what the weather in Colombo in January will be like? Take a look at our weather guide for Colombo, based on historical data.
Check flight prices to Colombo on Avionero:
January

Weather in Colombo in January 2025

OK Weather
Hot
🌧️
Rainy
🌊
Warm water
If you plan to visit Colombo in January, the weather is typically alright, with an average high temperature of +31°C during the day and approximately 5 sunny days. Expect some rainy, though, as there are typically 13 rainy days in the month and around 62 mm of precipitation. The weather is changeable so you may have to pack for every eventuality. Search flights in one click on Avionero.
Good to know:
  • January is usually the driest month of the year in Colombo

Average weather

☀️
+31°C
Avg. max. temperature
+20°C
Min.
+36°C
Max.
62 mm
Total precipitation
75%
Avg. humidity
3 m/s
Avg. wind
5 ☀️
Sunny Days
11 ⛅️
Cloudy
13 🌦
Rainy
Our opinion: Colombo has OK weather in January.

Average temperature in Colombo in January

Here are the expected maximum, average and minimum temperatures in Colombo for January based on the historical data.
Last Year
Historical Data

Going from a maximum of +33°C during the day to a minimum of +21°C during the night, the temperature in January averages around +31°C.

The average maximum temperature goes down 25% by the end of the month, compared with the beginning of the month, from +32°C to +29°C.

Is Colombo warm or cold in January?

Colombo is typically hot in January.

Maximum temperatures go up compared to the previous month from +30°C to +31°C. The minimum temperature also goes down from +24°C to +23°C.

Make sure that you pack your summer linen and swimming costumes; it’s probably going to be hot.

Take a look at how January is compared to other months in Colombo:

Water temperature in Colombo in January

Water in Colombo in January is Warm. It varies from +26°C to +29°C, with an average of +28°C. This is almost similar to the air temperature, which averages +31°C.

The water temperature in January is one of the coldest of the entire year:

The warmest water temperatures in Colombo are reached in April, when the average sea temperature rises to +30°C. The coldest water temperatures are in August, with an average of +27°C.

Can you swim in Colombo in January?

You can absolutely swim in Colombo in January, the water is warm (+28°C in average), similar to heated pools. Suitable for most people, including children and the elderly.
🦭
Cold
Below +16°C
🏄‍♂️
Fresh
16°C - 21°C
🏊
Comfortable
21°C - 25°C
👙
Warm
25°C - 28°C
🔥
Very warm
+28°C and up
Bring your swimming suit, sunscreen and your favorite inflatable pink flamingo.

Climate in Colombo in January

Colombo weather looks like this, on average, in January and the surrounding months.
DecemberJanuaryFebruary
Avg. temperature
+30°C+31°C+31°C
Min. temperature
+20°C+20°C+20°C
Max. temperature
+34°C+36°C+36°C
Rainfall
163 mm62 mm54 mm
Wind
2 m/s3 m/s2 m/s
Avg. water temperature
+28°C+28°C+28°C
Humidity
80%75%75%
Air pressure
1010 HPa1010 HPa1010 HPa
Sunny days
355
Cloudy days
6118
Rainy days
181313
Snowy days
000

January weather is still as ok as in December. It’s getting warmer as January arrives. The average maximum temperature goes up from +30°C to +31°C during the day. As January arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 163 mm to 62 mm. It feels drier, as humidity decreases from 80% to 75%. Winds are stronger in comparison to December, going up from 2 m/s to 3 m/s on average. The good news is there are likely to be more sunny days in January, from 3 to 5.

February brings much the same weather, it remains ok.

Wind

Wind speed in Colombo in January based on historical data.
Last Year
Historical Data

The average wind speed is 3 m/s getting up to 5 m/s which is a light breeze; barely moving the tree leaves.

The average wind speed in Colombo is gradually increasing during January, going from 3 m/s to 5 m/s over the course of the month.

Rain

Amount of rainfall in mm during January in Colombo based on historical data.
Last Year
Historical Data
Typically, there is a 39% chance of rain on an average day in January, with total rainfall of approximately 67 mm. The maximum amount of rainfall per day is around 15 mm, which is considered light rain. January is a pretty wet month with over 12 rainy days, so don’t forget to pack an umbrella, raincoat, and a pair of galoshes.
Here’s how January is compared with other months in the amount of precipitation, total mm:
Colombo wettest month is October, where a typical day has a 77% chance of precipitation and 300 mm of rainfall per day. February, on the other hand, is the driest month with a mere 45% chance of precipitation and 54 mm of rainfall per day.

How was the weather last January in Colombo?

This is the weather in Colombo in January 2023:
1 January
☁️
+32°C
2 January
☀️
+32°C
3 January
☀️
+32°C
4 January
☀️
+32°C
5 January
☁️
+32°C
6 January
☁️
+33°C
7 January
☁️
+32°C
8 January
☁️
+31°C
9 January
☀️
+32°C
10 January
☁️
+32°C
11 January
☁️
+31°C
12 January
☀️
+30°C
13 January
☀️
+31°C
14 January
☀️
+31°C
15 January
☁️
+30°C
16 January
☁️
+31°C
17 January
☁️
+29°C
18 January
☁️
+30°C
19 January
☀️
+32°C
20 January
☁️
+31°C
21 January
🌧️
+29°C
22 January
☁️
+30°C
23 January
🌧️
+32°C
24 January
🌧️
+30°C
25 January
☁️
+31°C
26 January
☀️
+31°C
27 January
☁️
+31°C
28 January
☀️
+32°C
29 January
🌫️
+32°C
30 January
🌧️
+31°C
31 January
☁️
+29°C
In January 2023 Colombo had 10 sunny days, 16 cloudy days, and 4 rainy days. The average maximum temperature was +31°C, with an absolute maximum of +33°C and a minimum of +29°C. The average humidity was 75%, with a maximum of 100% and a minimum of 39%. The average wind speed was 3 m/s, with a maximum of 8 m/s and a minimum of 0 m/s.
Are you planning a trip in January?

Climate Change over Years

This is how Colombo climate have been changing during last 43 years period.

The climate in Colombo in January has not changed much over the last 43 years.

The average temperature was the lowest in 2000 (+29°C) and the highest in 2020 (+32°C). The driest year was 1980 with only 1662 mm of rainfall, and the wettest year was 2006 with 3008 mm.

FAQ

Frequently asked questions about the weather in Colombo in January:

Is January a good time to visit Colombo?

It’s always a good time to visit Colombo, but the weather is changeable in January, so plan a mix of indoor and outdoor activities and exploring, and pack for every eventuality.

Can you sunbathe in Colombo in January?

Absolutely, January is hot in Colombo. Plan on beach and pool time, and ensure that you pack light and breathable options to stay comfortable.

Can you swim in Colombo in January?

Yes, you can swim in Colombo in January, the water temperature averaging at +28°C. This temperature is considered warm and comfortable for most swimmers.

Is Colombo rainy in January?

Colombo is often rainy in January. You may get a bit damp when outside, so pack an umbrella, and maybe even a raincoat.

Is it sunny in Colombo in January?

Usually, it’s not very sunny in Colombo in January, often it’s pretty cloudy. Pack for any eventuality; layering can help reduce the number of bulky items needed.

Monthly weather in Colombo

Source of the data

For this page, we’ve looked at the typical weather in Colombo, based on historical hourly weather data from January 1, 1979, to December 31, 2023.

For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.