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Colombo in May: Weather, Average temperature and Climate

Take a look at past year’s weather for Colombo in May and see if it is worth visiting.
Check flight prices to Colombo on Avionero:
May

Weather in Colombo in May 2024

OK Weather
Warm
🌧️
Rainy
May could be a good time to visit Colombo, as the weather is generally fine. The average high temperature is around +30°C, and there are typically 0 sunny days in May. However, expect about 25 rainy days, and total monthly rainfall of approximately 277 mm. The weather is changeable so pack for every eventuality. Search flights in one click on Avionero.

Average weather

☀️
+30°C
Avg. max. temperature
+22°C
Min.
+36°C
Max.
277 mm
Total precipitation
84%
Avg. humidity
3 m/s
Avg. wind
0 ☀️
Sunny Days
6 ⛅️
Cloudy
25 🌦
Rainy
Our opinion: Colombo has OK weather in May.

Average temperature in Colombo in May

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

Going from a maximum of +32°C during the day to a minimum of +25°C during the night, the temperature in May averages around +30°C.

The average maximum temperature goes down 57% by the end of the month, compared with the beginning of the month, from +30°C to +26°C.

Is Colombo warm or cold in May?

Colombo is typically warm in May.

Maximum temperatures go up compared to the previous month from +31°C to +30°C. The minimum temperature also goes up from +25°C to +26°C.

It’s generally warm, but pack a long-sleeve shirt for evenings.

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

Climate in Colombo in May

Colombo weather looks like this, on average, in May and the surrounding months.
AprilMayJune
Avg. temperature
+31°C+30°C+29°C
Min. temperature
+22°C+22°C+21°C
Max. temperature
+36°C+36°C+33°C
Rainfall
165 mm277 mm259 mm
Wind
1 m/s3 m/s4 m/s
Humidity
81%84%84%
Air pressure
1008 HPa1007 HPa1007 HPa
Sunny days
200
Cloudy days
1068
Rainy days
182522
Snowy days
000

May weather is still as ok as in April. It’s getting colder in May. From +31°C in the day, the average maximum temperature lowers to +30°C. Prepare for more rain. Average rainfall goes from 165 mm to 277 mm. Humidity rises from 81% to 84%. Winds are stronger in comparison to April, going up from 1 m/s to 3 m/s on average. The days becoming less sunny, going from 2 sunny days in April to 0 in May.

June brings much the same weather, it remains ok.

Wind

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

The average wind speed is 6 m/s getting up to 8 m/s which is a medium breeze. You can feel it, especially getting out of the water.

The average wind speed in Colombo is gradually increasing during May, going from 5 m/s to 7 m/s over the course of the month.

Rain

Amount of rainfall in mm during May in Colombo based on historical data.
Last Year
Historical Data
Typically, there is a 100% chance of rain on an average day in May, with total rainfall of approximately 484 mm. The maximum amount of rainfall per day is around 70 mm, which is considered heavy rain. May is a pretty wet month with over 31 rainy days, so don’t forget to pack an umbrella, raincoat, and a pair of galoshes.
May is one of the rainiest months in Colombo, here is a comparison with other months, total mm:
Colombo wettest month is October, where a typical day has a 68% chance of precipitation and 295 mm of rainfall per day. February, on the other hand, is the driest month with a mere 17% chance of precipitation and 59 mm of rainfall per day.

How was the weather last May in Colombo?

This is the weather in Colombo in May 2023:
1 May
🌧️
+30°C
2 May
🌧️
+32°C
3 May
☁️
+32°C
4 May
🌧️
+31°C
5 May
🌧️
+30°C
6 May
🌧️
+30°C
7 May
☁️
+31°C
8 May
🌧️
+31°C
9 May
🌧️
+30°C
10 May
🌧️
+30°C
11 May
🌧️
+30°C
12 May
🌧️
+29°C
13 May
🌧️
+28°C
14 May
🌧️
+28°C
15 May
🌧️
+31°C
16 May
🌧️
+29°C
17 May
🌧️
+29°C
18 May
🌧️
+29°C
19 May
🌧️
+30°C
20 May
🌧️
+30°C
21 May
🌧️
+30°C
22 May
☁️
+30°C
23 May
☁️
+30°C
24 May
🌧️
+28°C
25 May
🌧️
+30°C
26 May
🌧️
+29°C
27 May
🌧️
+29°C
28 May
🌧️
+29°C
29 May
🌧️
+28°C
30 May
🌧️
+28°C
31 May
🌧️
+26°C
In May 2023 Colombo had 0 sunny days, 4 cloudy days, and 27 rainy days. The average maximum temperature was +30°C, with an absolute maximum of +32°C and a minimum of +26°C. The average humidity was 86%, with a maximum of 94% and a minimum of 73%. The average wind speed was 6 m/s, with a maximum of 9 m/s and a minimum of 2 m/s.
Are you planning a trip in May?

Climate Change over Years

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

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

The average temperature was the lowest in 1999 (+30°C) and the highest in 2020 (+33°C). The driest year was 2019 with only 108 mm of rainfall, and the wettest year was 2016 with 587 mm.

FAQ

Frequently asked questions about the weather in Colombo in May:

Is May a good time to visit Colombo?

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

Can you sunbathe in Colombo in May?

May is warm in Colombo. You may enjoy some beach or pool time in the day, but pack something a tad warmer for the evening.

Is Colombo rainy in May?

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

Is it sunny in Colombo in May?

Usually, it’s not very sunny in Colombo in May, 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, 2022.

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.