Will it rain today in Colombo?
Should you take an umbrella in Colombo? The forecast below loads live every time you open the page: rain now, when the next shower comes, and how much falls today and tomorrow.
Rain right now
It is raining in Colombo right now: moderate rain. Today’s total: 24 mm over 9 wet hours. Tomorrow: 7.4 mm of rain.
As of 2026-10-16 17:35 UTC (NOAA GFS snapshot). Updating live…
Rain every 3 hours, today and tomorrow
Today · Friday 16 October
24 mm of rain, 9 wet hours, up to 3.5 mm/h. (the forecast covers part of the day)
Every 3 hours as a table
| Hours | Rain (mm) | mm/h | Type |
|---|---|---|---|
| 14:30–17:30 | 6.1 | 2.1 | light · rain |
| 17:30–20:30 | 7.2 | 2.4 | light · rain |
| 20:30–23:30 | 11 | 3.5 | moderate · rain |
Tomorrow · Saturday 17 October
7.4 mm of rain, 21 wet hours, up to 1.0 mm/h.
Every 3 hours as a table
| Hours | Rain (mm) | mm/h | Type |
|---|---|---|---|
| 23:30–02:30 | 3.1 | 1.0 | light · rain |
| 02:30–05:30 | 0.4 | 0.2 | light · rain |
| 05:30–08:30 | 0.1 | 0 | dry |
| 08:30–11:30 | 0.6 | 0.2 | light · rain |
| 11:30–14:30 | 1.0 | 0.4 | light · rain |
| 14:30–17:30 | 0.5 | 0.2 | light · rain |
| 17:30–20:30 | 0.8 | 0.3 | light · rain |
| 20:30–23:30 | 0.9 | 0.3 | light · rain |
Times in local time (Asia/Colombo). Each bar is the rain over 3 hours; striped bars are snow.
Rain map around Colombo
The same NOAA GFS precipitation on the map, moving hour by hour: blue light, darker heavy. Tap for the value.
How much it rains in Colombo, month by month
Colombo gets about 2,001 mm of rain a year. The wettest month is November (305 mm), the driest February (71 mm); a normal October brings 292 mm.
Average monthly rain and snow (water equivalent) 2001–2025, NASA POWER (MERRA-2 reanalysis, public domain), on a ~50 km grid: mountains and coasts can differ locally.
More for Colombo
Weather in Colombo now · Rain totals map · Thunderstorms · Cloud map
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Questions
- Will it rain today in Colombo?
- At 16 October 2026 the forecast said: It is raining in Colombo right now: moderate rain. Today’s total: 24 mm over 9 wet hours. Tomorrow: 7.4 mm of rain. The box at the top of the page loads the latest NOAA GFS forecast every time you open it, with the time the next rain starts.
- How much does it rain in Colombo?
- About 2,001 mm a year on average (2001–2025). November is the wettest month with 305 mm, February the driest with 71 mm.
- What do the rain amounts mean?
- 1 mm is a litre of water per square metre. Under 2.5 mm an hour is light rain (a drizzle to a steady rain), 2.5–7.6 moderate, above 7.6 heavy: you get soaked in minutes and streets can flood.
- How accurate is the forecast?
- It is the global NOAA GFS model on a 0.25° grid every 3 hours: good at telling a rainy day from a dry one, less at placing a single summer thunderstorm. Check the rain map for the showers moving around Colombo.
Rain forecast nearby
Kandy · Galle · Thiruvananthapuram · Kochi · Coimbatore · Chennai
How this page works
The rain is the one the rain layer of the map paints: NOAA GFS forecast (public domain), precipitation rate averaged over 3 hours, read at Colombo and summed per local day. Rain or snow comes from the GFS precipitation type. The monthly normals are NASA POWER. No third-party weather service.