Colombo
කොළඹ · கொழும்பு
Colombo is in Colombo DS division, Colombo district
Today’s warning doesn’t mention Colombo
Not listed doesn’t mean safe.
It lists 2 other places in Colombo district.
We don’t know about road closures or damage. Be cautious on the way, especially in the hills in rain.
About Colombo
Colombo is a Divisional Secretariat (DS) division in Colombo district, Western Province.
It is inside the area NBRI’s landslide bulletins cover.
Towns on our road checks here: Colombo.
Named rivers here: Heea Ela (4 km), Kelani Ganga (4 km).
River basins: Kelani Ganga.
Past NBRI bulletins
None of the 41 NBRI bulletins we have passed on since Sun 20 Sept listed Colombo.
A record of past bulletins, not a forecast. Not being listed doesn’t mean safe.
Wettest days on the satellite record
The wettest days here since June 2000, on NASA’s satellite rain estimate (IMERG): April 2003, November 2005, June 2024.
Months only, never amounts: the satellite’s amounts can be far off at any one place (too low in the hills). This is not a warning.
Roads through Colombo
The fastest road between two of our towns, as on each road check.
- Colombo – BIA Airport (Katunayake)
- Colombo – Negombo
- Colombo – Avissawella
- Colombo – Kalutara
- Colombo – Bentota
- Colombo – Chilaw
- Colombo – Kegalle
- Colombo – Hikkaduwa
- Colombo – Kurunegala
- Colombo – Galle
- Colombo – Mawanella
- Colombo – Ratnapura
and 46 more
Neighbouring DS divisions
Embed this on your site
A small card with the current warning for Colombo, updated with each bulletin.
<iframe src="https://lankawatch.org/embed/colombo/" width="340" height="190" style="border:0;max-width:100%" title="Colombo landslide warning · LankaWatch" loading="lazy"></iframe>
Rain here
×Rain gauges near Colombo
- Nagalagam Street · about 4 km away · river gauge
0 mm, Dry - Colombo · about 4 km away
8.6 mm, Light rain - NBRI (NBRI) · about 5 km away
7.6 mm, Light rain - Ratmalana · about 13 km away
14.6 mm, Moderate rain
Rain in the 24 hours to Mon 9 Nov, 08:30, as published by Department of Meteorology · Irrigation Department · NBRI. Nearest first; Met gauge sites are approximate.
Rain here
Last 3 days: Not unusual
- Rain over the last 7 days has not been unusual for the divisions on this route.
- Compared with each division's own satellite record since 2000. This is not a warning and does not replace NBRI's levels. Satellites can miss heavy local downpours, so it never means a road is safe. Satellite data up to 10 Nov, 02:30.
Weather forecast (Department of Meteorology)
- No Department of Meteorology advisory is in force for Colombo.
- Forecast issued 10 Nov, 05:30
- Showers or thundershowers will occur at times in the Northern province and in Trincomalee district.
- Showers or thundershowers will occur elsewhere in the island after 1.00 p.m.
- Covers Colombo on this road: Heavy falls above 100mm are likely at some places in Western, Sabaragamuwa, Central and Uva provinces and in Galle and Matara districts.
- Showers may occur in the coastal areas of the Southern Province during the morning.
- The general public is kindly requested to take adequate precautions to minimize damage caused by temporary localized strong winds and lightning during thundershowers.
- Covers Colombo on this road: Misty conditions can be expected at some places in Western, Sabaragamuwa, Central and Uva provinces and in Galle, Matara and Kurunegala districts during the early hours of the morning.
- Forecast for the main cities, Tuesday, 10 November 2026 (issued 9 Nov, 16:00)
- Colombo: Showers or thundershowers after 1.00p.m. Max 31°C, min 24°C.
- A forecast never lowers or replaces the NBRI landslide warning above.
- Forecast and advisories by the Department of Meteorology, Sri Lanka, as issued. LankaWatch is not an official service.
Rain outlook (computer model) · Next day: Not signalled
- Next day: unusually heavy rain is not signalled for the divisions on this road. (10 Nov, 05:30 to 11 Nov, 05:30)
- Next 3 days: unusually heavy rain is not signalled for the divisions on this road. (10 Nov, 05:30 to 13 Nov, 05:30)
- "Not signalled" never means dry or safe. This is a computer model, not a warning, and it never changes NBRI's levels. Like the satellite, it reads hill-country rain low and can miss heavy local downpours.
- ECMWF ensemble forecast (open data, CC BY 4.0), run 9 Nov, 17:30, compared with each division's own satellite record.
None of these changes NBRI’s level.
Weather forecast (Met Dept)
×- No Department of Meteorology advisory is in force for Colombo.
- Forecast issued 10 Nov, 05:30
- Showers or thundershowers will occur at times in the Northern province and in Trincomalee district.
- Showers or thundershowers will occur elsewhere in the island after 1.00 p.m.
- Covers Colombo on this road: Heavy falls above 100mm are likely at some places in Western, Sabaragamuwa, Central and Uva provinces and in Galle and Matara districts.
- Showers may occur in the coastal areas of the Southern Province during the morning.
- The general public is kindly requested to take adequate precautions to minimize damage caused by temporary localized strong winds and lightning during thundershowers.
- Covers Colombo on this road: Misty conditions can be expected at some places in Western, Sabaragamuwa, Central and Uva provinces and in Galle, Matara and Kurunegala districts during the early hours of the morning.
- Forecast for the main cities, Tuesday, 10 November 2026 (issued 9 Nov, 16:00)
- Colombo: Showers or thundershowers after 1.00p.m. Max 31°C, min 24°C.
- A forecast never lowers or replaces the NBRI landslide warning above.
- Forecast and advisories by the Department of Meteorology, Sri Lanka, as issued. LankaWatch is not an official service.
Rivers and catchments here
×2 named rivers here · 1 basin · Kelani Ganga basin rain: Rare here (1–2 days a month)
River basins this division lies in
- Kelani Ganga basin
Satellite rain over these basins
- Kelani Ganga basin · Last 3 days: Rare here (1–2 days a month)
A whole-basin satellite average against that basin’s own record since 2000, not the area upstream of any one point. Satellites under-read hill rain. Not a warning.
Named rivers through this division
- Heea Ela (Kelani Ganga basin) · about 4 km inside
- Kelani Ganga · about 4 km inside
Irrigation Department gauges on these rivers
- Nagalagam Street, an Irrigation Department gauge in this division (2,256 km² upstream · rain over that area, Last 3 days: Rare here (1–2 days a month)): 0 mm in the 24 hours to 9 Nov, 08:30 (Dry); 0 mm in the 3 hours to 10 Nov, 08:01.
River level 2.7 ft · Below Alert · falling over about 3 hours (Department’s thresholds: Alert 4, minor flood 5, major flood 7 ft)
Rivers and basins come from our own map of Sri Lanka’s river network. Flow direction, where shown, is worked out from the height of the land. This is orientation only, not a flood warning.
The area draining to a crossing is worked out from a terrain model (about 90 m cells) and is approximate. The rain over it is the satellite average for that same area, against its own record since 2000. Areas under about 150 km² are smaller than the satellite can see, so they show no rain.
River levels are the Irrigation Department’s own readings at its gauge, against its own thresholds. This is not a flood warning: flood warnings come from the Irrigation Department and DMC.