Temperature
Warm by day, warm at night.
81°Ftypical December high
Typical range
December climate
December in Trincomalee
Sri Lanka · Asia
Cyclone risk and humid air are the main limitations.
Wet but workable
Daytime high
81°F
Lows around 76°F
Rain
Rain most days
Sun
9 h/day
Air feel
Humid
Sea temp
83°F
Great for swimming
When to visit
Month-by-month fit
Best
Precipitation
It rains on most days, and rain often persists for longer stretches. About 21 wet days, more than in most months.
68%wet-day frequency
AmountWet-day chance
Sunshine
Cloudier spells limit sunshine.
9 hDecember sunshine
Heat & humidity by month
Warm days, with humid periods.
84%December Heat feel
Easy airWarm airHumid airVery humid air
Hourly temperature pattern
In December, afternoons feel about 84° and nights feel near 81°.
WarmHotSwelteringNight hours
Clear sky
Mostly cloudy skies this month.
28%December Clear sky
Clear skyCloud
Wind pattern
December's typical breeze keeps the air from feeling as stagnant.
10 mphDecember Breezy
Sea temperature
83°FDecember sea temp
More detailIncludes daypart comfort
Typical December day
December late afternoons are around 80°F, and early evening stays near 79°F.
Avg temp Typical range
Morning79°F
Feels 83°F
Rain52%
Cloud72%
Humid airVery high
Sun intensityLow
Midday81°F
Feels 84°F
Rain52%
Cloud72%
Humid airVery high
Sun intensityStrong
Late afternoon80°F
Feels 83°F
Rain48%
Cloud70%
Humid airVery high
Sun intensityModerate
Early evening79°F
Feels 83°F
Rain45%
Cloud70%
Humid airVery high
Sun intensityMinimal
Best windowData tableView month-by-month numbers
View month-by-month numbers
| Month | High°F | Low°F | Rainin | Wet days | Sunh | Humidity% | Sea°F |
|---|---|---|---|---|---|---|---|
| Jan | 81 | 76 | 5.8 | 15 | 10.1 | 79 | 82 |
| Feb | 82 | 76 | 3.1 | 10 | 11.0 | 78 | 82 |
| Mar | 85 | 78 | 1.8 | 9 | 11.4 | 78 | 84 |
| Apr | 88 | 79 | 2.5 | 12 | 11.1 | 78 | 86 |
| May | 91 | 81 | 2.1 | 8 | 11.3 | 73 | 86 |
| Jun | 92 | 81 | 0.7 | 3 | 11.0 | 70 | 85 |
| Jul | 91 | 80 | 1.2 | 6 | 10.9 | 69 | 84 |
| Aug | 91 | 80 | 2.0 | 8 | 10.9 | 70 | 83 |
| Sep | 91 | 79 | 2.2 | 10 | 10.6 | 71 | 84 |
| Oct | 87 | 78 | 7.9 | 19 | 10.1 | 78 | 84 |
| Nov | 83 | 77 | 13.1 | 24 | 8.9 | 84 | 84 |
| Dec | 81 | 76 | 10.9 | 21 | 9.0 | 82 | 83 |
Similar climates
Similar
Similar travel styleEnglish HarbourAntigua and BarbudaSimilar travel styleDa NangVietnamSimilar travel styleNatalBrazilSimilar travel styleOcho RiosJamaica
Want a side-by-side climate view? Compare Trincomalee with English Harbour.
Climate data notePlanning guidance, not a forecast
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Sunshine: source type is not yet identified at metric level.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Jun 1, 2026
Data & methodology