worldweather

Weather in Colombo - 14-day forecast

Detailed weather forecast for Colombo, Sri Lanka: daytime and night temperature, rain, sunrise and sunset - today and for the next two weeks.
Forecast for the next days in Colombo
today🌧️ 31°💧 5.3 mm
Sun🌧️ 30°💧 10 mm
Mon🌧️ 29°💧 16.7 mm
Tue🌧️ 29°💧 16.3 mm
Wed🌧️ 29°💧 9.7 mm
Thu🌧️ 28°💧 18.1 mm
Fri🌧️ 28°💧 21.5 mm
Sat🌧️ 28°💧 31.4 mm
Forecast vs 1991-2020 climate normal

How does the current forecast compare with normal?

We compare the coming days with weather usually observed at this time of year.

NASA POWER

Saturday 5 Sept in Colombo, the forecast high is 31°C. Typical daytime temperatures at this time of year range from 27°C to 29°C, so it will be exceptionally warm. It is warmer than 99% of similar days.

31°Cexceptionally warm
usually 27°C–29°C
warmer than 99% of similar days
night: exceptionally warm rain: more rain than usual wind: lighter than usual
30°Cexceptionally warm
usually 27°C–29°C
warmer than 91% of similar days
night: exceptionally warm rain: more rain than usual wind: lighter than usual
29°Cwarmer than usual
usually 27°C–29°C
warmer than 74% of similar days
night: exceptionally warm rain: exceptionally wet wind: lighter than usual
29°Cwarmer than usual
usually 28°C–29°C
warmer than 71% of similar days
night: exceptionally warm rain: exceptionally wet wind: typical
29°Cnear normal
usually 28°C–29°C
night: exceptionally warm rain: more rain than usual wind: lighter than usual
28°Cnear normal
usually 28°C–29°C
night: exceptionally warm rain: exceptionally wet wind: typical
28°Cnear normal
usually 28°C–29°C
night: exceptionally warm rain: exceptionally wet wind: typical

How warm was this week in previous years?

Each bar shows the average daily high during the same 7-day period in each year.

swipe to see more years →
25°30°35° 1981: 27°C1982: 29°C1983: 27°C1984: 28°C1985: 28°C1986: 28°C1987: 30°C1988: 27°C1989: 28°C1990: 29°C1991: 29°C1992: 28°C1993: 29°C1994: 28°C1995: 29°C1996: 28°C1997: 29°C1998: 27°C1999: 29°C2000: 29°C2001: 30°C2002: 30°C2003: 28°C2004: 28°C2005: 28°C2006: 27°C2007: 28°C2008: 28°C2009: 28°C2010: 28°C2011: 28°C2012: 28°C2013: 27°C2014: 28°C2015: 28°C2016: 29°C2017: 28°C2018: 29°C2019: 29°C2020: 28°C2021: 28°C2022: 27°C2023: 28°C2024: 29°C2025: 29°C 2026 forecast: 29°C current forecast 29°C 198119902000201020202026
cooler yearstypical rangewarmer years2026 forecastcurrent forecast

From 1981 to 2025, the 5-11 Sept period averaged 28°C by day. The coolest year was 2013 (27°C) and the warmest was 2002 (30°C). The current forecast averages 29°C - higher than in 87% of historical years.

Historical reference: NASA POWER daily gridded data (MERRA-2), the 1991-2020 normal and a +/- 7-day calendar window. The typical range is the 20th-80th percentile. This is not a city weather-station reading and does not change the current forecast. NASA POWER Daily API.

14-day forecast - Colombo

Colombo - 14-day weather forecast infographic

Colombo 30 & 45-day weather - long-range outlook

Next 16 days · forecast
28°
around 27° at night · days with rain: 16
Weeks 3-4 · avg for September
31°
around 26° at night · rain chance 56%
Weeks 5-7 · avg for October
31°
around 25° at night · rain chance 64%
The 30 & 45-day outlook for Colombo: the next 16 days are a numerical forecast updated daily - on average 28° by day and 27° at night. Further out we rely on multi-year climate averages: around 31° in September, and about 31° in October. Forecasts beyond two weeks are indicative only.

Day-by-day forecast for Colombo

Saturday5 September 2026
🌧️31°light rain
sunrise 06:03 · sunset 18:16 · night 28° · evening 29° · rain 5.34 mm · humidity 78% · wind 6 m/s · clouds 47%
Sunday6 September 2026
🌧️30°moderate rain
sunrise 06:03 · sunset 18:16 · night 28° · evening 29° · rain 9.95 mm · humidity 76% · wind 6 m/s · clouds 99%
Monday7 September 2026
🌧️29°moderate rain
sunrise 06:02 · sunset 18:15 · night 27° · evening 28° · rain 16.74 mm · humidity 75% · wind 5 m/s · clouds 84%
Tuesday8 September 2026
🌧️29°moderate rain
sunrise 06:02 · sunset 18:15 · night 27° · evening 28° · rain 16.32 mm · humidity 76% · wind 6 m/s · clouds 83%
Wednesday9 September 2026
🌧️29°light rain
sunrise 06:02 · sunset 18:14 · night 27° · evening 28° · rain 9.67 mm · humidity 77% · wind 6 m/s · clouds 78%
Thursday10 September 2026
🌧️28°light rain
sunrise 06:02 · sunset 18:13 · night 27° · evening 27° · rain 18.06 mm · humidity 78% · wind 6 m/s · clouds 100%
Friday11 September 2026
🌧️28°moderate rain
sunrise 06:02 · sunset 18:13 · night 27° · evening 27° · rain 21.51 mm · humidity 78% · wind 7 m/s · clouds 93%
Saturday12 September 2026
🌧️28°moderate rain
sunrise 06:02 · sunset 18:12 · night 27° · evening 27° · rain 31.38 mm · humidity 76% · wind 7 m/s · clouds 100%
Sunday13 September 2026
🌧️28°light rain
sunrise 06:01 · sunset 18:12 · night 27° · evening 27° · rain 13.17 mm · humidity 80% · wind 7 m/s · clouds 100%
Monday14 September 2026
🌧️28°light rain
sunrise 06:01 · sunset 18:11 · night 27° · evening 27° · rain 16.02 mm · humidity 82% · wind 9 m/s · clouds 100%
Tuesday15 September 2026
🌧️28°light rain
sunrise 06:01 · sunset 18:11 · night 27° · evening 27° · rain 8.67 mm · humidity 77% · wind 9 m/s · clouds 100%
Wednesday16 September 2026
🌧️28°light rain
sunrise 06:01 · sunset 18:10 · night 27° · evening 27° · rain 12.54 mm · humidity 80% · wind 9 m/s · clouds 100%
Thursday17 September 2026
🌧️28°moderate rain
sunrise 06:01 · sunset 18:10 · night 27° · evening 27° · rain 17.04 mm · humidity 79% · wind 9 m/s · clouds 88%
Friday18 September 2026
🌧️28°moderate rain
sunrise 06:01 · sunset 18:09 · night 27° · evening 27° · rain 29.04 mm · humidity 81% · wind 7 m/s · clouds 100%
Saturday19 September 2026
🌧️29°moderate rain
sunrise 06:00 · sunset 18:09 · night 27° · evening 27° · rain 18.57 mm · humidity 76% · wind 7 m/s · clouds 100%
Sunday20 September 2026
🌧️29°moderate rain
sunrise 06:00 · sunset 18:08 · night 27° · evening 28° · rain 12.12 mm · humidity 76% · wind 6 m/s · clouds 91%

UV index in Colombo - is it safe to sunbathe?

UV INDEX · 16-DAY FORECASTColombo03681111+9.1UV VERY HIGHtoday, daily maxSPF 50, long sleeves and shade between 10:00 and16:00.Unprotected fair skin may burn in about 20 min9Sat5.099Sun6.099Mon7.099Tue8.099Wed9.099Thu10.099Fri11.099Sat12.099Sun13.099Mon14.099Tue15.099Wed16.099Thu17.098Fri18.099Sat19.0910Sun20.090-2 low3-5 moderate6-7 high8-10 very high11+ extremeworld-prices.com · 2026-09-05
Today the UV index in Colombo is 9 (very high) - unprotected fair skin can burn in about 20 minutes. SPF 50, long sleeves and shade between 10:00 and 16:00.

Sea temperature - Colombo

Water today
30°C
Week avg
30°C
Waves today
1.2 m
How's the water?
very warm
16-day sea temperature forecast:
5.09 30°C6.09 29°C7.09 30°C8.09 30°C9.09 30°C10.09 30°C11.09 30°C12.09 30°C13.09 30°C
Average sea temperature through the year:
Jan 29°CFeb 29°CMar 30°CApr 31°CMay 30°CJun 29°CJul 29°CAug 29°CSep 29°COct 29°CNov 29°CDec 29°C
Sea-surface temperature from marine models, updated daily. See also: where the sea is warmest right now.

Colombo weather through the year

Colombo - annual climate

Warmest, driest months on average: January, February, December.

Upcoming public holidays in Sri Lanka: Binara Full Moon Poya Day — 26 September · Vap Full Moon Poya Day — 25 October · Deepavali — 8 November. Full calendar and travel notes

Nearby and related places

Sri Jayawardenepura KotteNegomboKandyGalleBatticaloaJaffnaAnuradhapuraTrincomalee

FAQ - Colombo weather

What is the weather like in Colombo today?
Today it is about 31° during the day and 28° at night, light rain.
How far ahead can I check the forecast for Colombo?
This page shows a detailed 14-day forecast plus the long-term monthly climate, so you can plan both a short trip and a holiday months ahead.