Colombo, Western, Sri Lanka Climate Change Severity

33
Moderate
The current climate change severity in Colombo is Moderate, with a 24.07% improvement in the climate score compared to last 15 years. This suggests improved conditions, with more favorable environmental indicators and a reduction in negative impacts.
Data: Jan. to Jul. (Historical Vs 2025) - Weather Data Only
Low
020
Moderate
40
High
60
Very High
80
Extreme
100
°C (c)

Colombo Weather Condition Changes (Historic Vs 2025)

2025
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
Historic
2025

Over the past 15 year(s), Colombo temperature has changed by around -2.1%, and has experienced notable climate changes.

Sunny
Cloudy
Rainy
Snowy
Misty
Data: Jan. to Jul. (Historical Vs 2025)

Comparison of Weather Condition (Historic Vs 2025)

HistoricDays

Year 2025Days

Change

sunnySunny
178
-52.9%
cloudyCloudy
1810
-44.4%
rainyRainy
174134
-22.9%
snowySnowy
00
0%
mistyMisty
00
0%

Disclaimer: Other weather conditions not shown may affect the total day count.

Climate Change Indicators:

Over the past 15 years, Colombo has experienced measurable improvements in key climate parameters, contributing to the current severity score of 33 (within the Moderate severity category). This suggests improving climate conditions compared to previous years. Here’s a breakdown of the specific changes observed:

Severity Score

33/100

Moderate

Low
020
Moderate
40
High
60
Very High
80
Extreme
100

From 2010 to 2025, Colombo experienced significant changes:

Temperature change of

-0.5 °C

Variation in annual rainfall

+8.7 %

Change in average humidity

+2.6 %

PM2.5 levels surged by

+7.04 %

Heatwave changed by

-5.6 day(s)

Coldwave changed by

+6 day(s)

Wind speeds changed by

+0.9 km/h

These indicators show reduced climate volatility, offering a valuable window to reinforce sustainable practices and strengthen long-term climate resilience. As the severity shifts toward Moderate, it is important to maintain momentum in climate adaptation efforts.

Check how we calculate Climate Change Severity
Based on data from Jan. to Jul.

Colombo Weather Forecast 30 Days (August - September 2025)
Colombo, Western, Sri Lanka

Condition
Temperature IconTemperature
Humidity Iconhumi.
Wind IconWind Speed
Wed. 27, Aug.
moderate rainModerate rain
Temperature Icon29°/26°
Humidity Icon83%
Wind Icon26km/h
Thu. 28, Aug.
moderate rainModerate rain
Temperature Icon28°/26°
Humidity Icon84%
Wind Icon23km/h
Fri. 29, Aug.
patchy rain possiblePatchy rain nearby
Temperature Icon28°/26°
Humidity Icon82%
Wind Icon23km/h
Sat. 30, Aug.
moderate rainModerate rain
Temperature Icon28°/26°
Humidity Icon84%
Wind Icon24km/h
Sun. 31, Aug.
moderate rainModerate rain
Temperature Icon29°/26°
Humidity Icon83%
Wind Icon18km/h
Mon. 1, Sep.
patchy rain possiblePatchy rain nearby
Temperature Icon28°/26°
Humidity Icon85%
Wind Icon20km/h
Tue. 2, Sep.
patchy rain possiblePatchy rain nearby
Temperature Icon28°/26°
Humidity Icon84%
Wind Icon19km/h
Wed. 3, Sep.
patchy rain possiblePatchy rain nearby
Temperature Icon28°/26°
Humidity Icon84%
Wind Icon23km/h
Thu. 4, Sep.
moderate rainModerate rain
Temperature Icon28°/26°
Humidity Icon84%
Wind Icon24km/h
Fri. 5, Sep.
patchy rain possiblePatchy rain nearby
Temperature Icon28°/26°
Humidity Icon84%
Wind Icon27km/h
Sat. 6, Sep.
patchy rain possiblePatchy rain nearby
Temperature Icon28°/26°
Humidity Icon84%
Wind Icon27km/h
Sun. 7, Sep.
patchy rain possiblePatchy rain nearby
Temperature Icon28°/26°
Humidity Icon86%
Wind Icon24km/h
Mon. 8, Sep.
moderate rainModerate rain
Temperature Icon27°/26°
Humidity Icon86%
Wind Icon22km/h
Tue. 9, Sep.
moderate rainModerate rain
Temperature Icon28°/26°
Humidity Icon84%
Wind Icon23km/h
Wed. 10, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon29°/25°
Humidity Icon83%
Wind Icon19km/h
Thu. 11, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon29°/25°
Humidity Icon82%
Wind Icon19km/h
Sat. 13, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon29°/25°
Humidity Icon83%
Wind Icon18km/h
Sun. 14, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon29°/25°
Humidity Icon82%
Wind Icon19km/h
Mon. 15, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon29°/25°
Humidity Icon82%
Wind Icon19km/h
Tue. 16, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon29°/25°
Humidity Icon83%
Wind Icon19km/h
Wed. 17, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon29°/25°
Humidity Icon83%
Wind Icon19km/h
Thu. 18, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon29°/25°
Humidity Icon83%
Wind Icon19km/h
Fri. 19, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon29°/25°
Humidity Icon83%
Wind Icon19km/h
Sat. 20, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon29°/25°
Humidity Icon83%
Wind Icon19km/h
Sun. 21, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon29°/25°
Humidity Icon83%
Wind Icon18km/h
Mon. 22, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon29°/25°
Humidity Icon82%
Wind Icon18km/h
Tue. 23, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon29°/25°
Humidity Icon81%
Wind Icon17km/h
Wed. 24, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon29°/25°
Humidity Icon81%
Wind Icon18km/h
Thu. 25, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon29°/25°
Humidity Icon82%
Wind Icon18km/h
Fri. 26, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon29°/25°
Humidity Icon81%
Wind Icon18km/h

Highest & Lowest Weather Forecasts

TemperatureTemperature

High will be onTue. 23, Sep.

29.4°C

Low will be onSun. 14, Sep.

25.2°C

HumidityHumidity

High will be onSun. 7, Sep.

86%

Low will be onTue. 23, Sep.

81%

Wind SpeedWind Speed

High will be onSat. 6, Sep.

27km/h

Low will be onTue. 23, Sep.

17.3km/h

PrecipitationPrecipitation

High will be onSat. 30, Aug.

16.3mm

Low will be onTue. 2, Sep.

3.6mm

Ultraviolet IndexUV

High will be onSun. 31, Aug.

6

Low will be onWed. 27, Aug.

3

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