Last 7 days
Today
29° / 25° High / Low (°C)
97% Humidity
100% Rain probability
Thunderstorm Condition
~22h Rain duration
What this means
In Jaffna on 21 Oct 2026, rain is expected: 100% chance, up to 19.9 mm forecast (source: Open-Meteo).
A thunderstorm is expected today for around 22 hours — 100% probability, up to 19.9mm forecast. An umbrella is the right call.
Rain season
Jaffna in northern Sri Lanka is dominated by the northeast monsoon (October–January), which delivers the bulk of its modest 1,000mm annual rainfall. The southwest monsoon largely bypasses the north, leaving summers hot and dry — some of the driest conditions in the country. Pre-monsoon heat in April–May is intense, frequently exceeding 36°C, before the northeast rains bring relief.
Elsewhere in Sri Lanka