Trincomalee climate by month
Averages and records for each calendar month at Trincomalee, Sri Lanka, from 1957 to 2025. The warmest month is June, averaging 35.1°C; the coolest is December at 28.6°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 28.7°C | 23.6°C | 32.7°C19 January 2011 | 16.1°C10 January 2011 | 19 / 56 |
| February | 29.8°C | 24.0°C | 34.0°C28 February 1973 | 18.6°C8 February 2017 | 14 / 60 |
| March | 31.6°C | 24.5°C | 38.0°C25 March 2004 | 20.0°C2 March 1962 | 17 / 60 |
| April | 33.7°C | 25.3°C | 38.6°C30 April 1996 | 21.4°C11 April 2022 | 19 / 59 |
| May | 34.6°C | 26.0°C | 39.4°C16 May 1996 | 21.0°C14 May 2013 | 19 / 60 |
| June | 35.1°C | 26.3°C | 39.3°C7 June 1998 | 23.0°C29 June 1981 | 17 / 58 |
| July | 34.9°C | 25.9°C | 39.0°C21 July 1975 | 21.7°C20 July 1985 | 19 / 56 |
| August | 34.8°C | 25.4°C | 39.4°C30 August 1987 | 21.7°C27 August 1984 | 19 / 58 |
| September | 34.8°C | 25.4°C | 40.0°C22 September 1973 | 21.2°C8 September 1984 | 16 / 58 |
| October | 32.3°C | 24.4°C | 39.5°C12 October 2014 | 21.9°C12 October 2017 | 21 / 56 |
| November | 29.9°C | 23.7°C | 34.3°C17 November 1998 | 19.2°C10 November 2010 | 17 / 55 |
| December | 28.6°C | 24.0°C | 35.5°C24 December 2021 | 16.5°C9 December 2022 | 21 / 52 |
Years shows the number behind the average high, then the number holding a record for that month. They differ because a year contributes an average only when the month has at least 25 days of readings, while a single reading is enough to set a record. The average low is withheld on the same 25-day rule and is counted separately again; it is shown as a dash where the archive cannot support it. Across the twelve months here the averages rest on 14 to 21 years each.
See what Trincomalee is doing right now
Every figure on this page is computed from NOAA GHCN-Daily observations stored per station, per year, per month. Nothing is modelled, interpolated or estimated, and a month the archive never covered is left out rather than filled in. A station appears here only once all twelve months carry an average from at least 10 years. See how this is built.