Weather in Trincomalee

14-day forecast · updated today, Thursday, October 29, at 2:52 pm (GMT+5:30)

Now · overcast 88 °F

Feels like: 96 °F
Low / high: 77 / 90 °F
Rain: 16%
Wind: 8 mph WSW

→ 29.80 inHg · steady UV 9 · very high

Today in Trincomalee: overcast, 77 °F to 90 °F, with a 16% chance of rain and a gentle breeze from the west-southwest (8 mph). Tomorrow, showers, 76 °F to 89 °F and a 80% chance of rain. The warmest day of the week is Thursday 29, at 90 °F.

Temperatures for the next 14 days

90° 77°
Today
89° 76°
Fri 30
89° 74°
Sat 31
90° 74°
Sun 1
88° 75°
Mon 2
88° 74°
Tue 3
89° 74°
Wed 4
87° 74°
Thu 5
86° 73°
Fri 6
87° 74°
Sat 7
79° 74°
Sun 8
86° 74°
Mon 9
87° 72°
Tue 10
86° 73°
Wed 11

Day by day

Day	Sky	Low / high	Rain	Max wind	Max wave	High tides	Model
Today · 29	Overcast	77 / 90 °F	16%	11 mph SW	1.8 ft	9:45 am · 10:27 pm	ECMWF
Fri 30	Showers	76 / 89 °F	80% · 0.41 in	8 mph WSW	1.2 ft	10:42 am · 11:23 pm	ECMWF
Sat 31	Light drizzle	74 / 89 °F	33% · 0.04 in	7 mph NNE	1.0 ft	11:50 am	ECMWF
Sun 1	Light drizzle	74 / 90 °F	51% · 0.04 in	4 mph SSW	0.9 ft	12:26 am · 1:13 pm	ECMWF
Mon 2	Light showers	75 / 88 °F	84% · 0.24 in	7 mph WSW	1.4 ft	1:36 am · 2:44 pm	ECMWF
Tue 3	Showers	74 / 88 °F	81% · 0.34 in	5 mph SSW	1.4 ft	2:48 am · 4:03 pm	ECMWF
Wed 4	Drizzle	74 / 89 °F	78% · 0.12 in	4 mph SW	1.2 ft	3:53 am · 5:03 pm	ECMWF
Thu 5	Drizzle	74 / 87 °F	80% · 0.12 in	5 mph SE	0.7 ft	4:49 am · 5:51 pm	ECMWF
Fri 6	Light showers	73 / 86 °F	86% · 0.61 in	4 mph NNE	0.6 ft	5:38 am · 6:32 pm	ECMWF
Sat 7	Light showers	74 / 87 °F	96% · 0.59 in	2 mph NNE	0.7 ft	6:21 am · 7:09 pm	ECMWF
Sun 8	Drizzle	74 / 79 °F	98% · 0.31 in	4 mph NNE	0.7 ft	7:01 am · 7:43 pm	ECMWF
Mon 9	Light showers	74 / 86 °F	94% · 0.54 in	4 mph NE	0.9 ft	7:38 am · 8:15 pm	ECMWF
Tue 10	Light showers	72 / 87 °F	94% · 0.45 in	3 mph S	0.9 ft	8:13 am · 8:47 pm	ECMWF
Wed 11	Heavy drizzle	73 / 86 °F	98% · 0.31 in	3 mph WNW	0.9 ft	8:47 am · 9:20 pm	ECMWF

Each day comes from the best model covering this spot: regional ones first (HRRR and NBM in the U.S., AROME, ICON-EU), then ECMWF; day 16, NOAA GFS. Waves: Météo-France up to day 10, then ECMWF WAM, coarser and further offshore. High tides: our own tide calculation.

Today, every 3 hours

Time	12:00 am	3:00 am	6:00 am	9:00 am	12:00 pm	3:00 pm	6:00 pm	9:00 pm
Sky	Mainly clear	Overcast	Partly cloudy	Partly cloudy	Overcast	Overcast	Overcast	Partly cloudy
Temperature	80°	78°	80°	86°	90°	88°	82°	79°
Chance of rain	1%	0%	0%	0%	5%	16%	7%	0%
Rain	0.00 in	0.00 in	0.00 in	0.00 in	0.00 in	0.00 in	0.00 in	0.00 in
Wind (mph)	9 SW	9 SW	9 SW	10 SW	10 WSW	8 WSW	5 SSW	6 SW
Humidity	84%	87%	85%	72%	61%	64%	79%	88%
UV	0	0	0	6	8	2	0	0
Model	ECMWF	ECMWF	ECMWF	ECMWF	ECMWF	ECMWF	ECMWF	ECMWF

Do the models agree?

Medium confidence

They broadly agree, but not quite on rain tomorrow: take it with some caution.

What 4 forecast models say for the next few days. The closer they are, the more reliable the forecast.

HighRainWind

Do the models agree? · High
High (°F)	Today	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3	Wed 4
ECMWF	90°	89°	89°	90°	88°	88°	89°
AIFS	92°	92°	90°	90°	90°	89°	89°
GFS	94°	96°	92°	91°	93°	90°	89°
ICON	93°	93°	91°	88°	89°	88°	88°
Confidence	high	medium	high	high	high	high	high

Do the models agree? · Rain
Rain	Today	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3	Wed 4
ECMWF	0	0.41 in	0.04 in	0.04 in	0.24 in	0.34 in	0.12 in
AIFS	0.02 in	0.09 in	0.05 in	0.05 in	0.52 in	0.35 in	0.21 in
GFS	0	0.12 in	0.01 in	0	0.14 in	0.07 in	0.14 in
ICON	0	0.35 in	0	0	0	0.02 in	0
Confidence	high	medium	medium	medium	medium	medium	medium

Do the models agree? · Wind
Wind (mph)	Today	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3	Wed 4
ECMWF	1125	819	715	411	714	519	416
AIFS	11	5	6	4	3	4	4
GFS	926	623	813	89	511	517	611
ICON	820	514	616	413	617	412	617
Confidence	high	high	high	high	high	high	high

Chance of rain from the ensemble models

Model	Today	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3	Wed 4
ECMWF (51 scenarios)	16%	80%	33%	51%	84%	81%	78%
GFS (GEFS, 31 scenarios)	48%	96%	23%	39%	81%	52%	55%

Each model's day runs midnight to midnight local time; models that reach fewer days are left blank. Rain: daily total. Wind: the day's highest average wind and, in small type, the strongest gust. Highlighted: values that stand out from the rest. The chance of rain comes from many runs of the same model with slightly different starting data.

Outlook

How the coming weeks and months compare with what is normal for the time of year. It is a trend, not a day-by-day forecast.

Next few weeks, compared with normal: a bit warmer and normal rain.

Next 6 weeks

When	TemperatureTemp.	Rain	Typical high / low
Nov 2 – Nov 8Nov 2–Nov 8	A bit above +1.6 °F	A bit below −49%	—
Nov 9 – Nov 15Nov 9–Nov 15	Normal +0.7 °F	Normal	—
Nov 16 – Nov 22Nov 16–Nov 22	A bit above +1.1 °F	Normal	83° / 76°
Nov 23 – Nov 29Nov 23–Nov 29	A bit above +1.1 °F	Normal	83° / 76°
Nov 30 – Dec 6Nov 30–Dec 6	A bit above +1.3 °F	Normal	82° / 76°

Coming months

When	TemperatureTemp.	Rain
November	A bit above +1.6 °F	A bit above +32%
December	A bit above +2.2 °F	A bit above +34%
January	Above +2.7 °F	A bit below −23%
February	Above +3.1 °F	A bit below −43%
March	Above +3.4 °F	Below −55%

Weeks: ECMWF 46-day (average of its scenarios), against the normal of the last 20 years for those dates. Months: ECMWF SEAS5. Rain: total against normal. The further ahead, the closer it gets to normal and the less detail it can give. The long-range sea temperature isn't usable at this spot (the model's grid cell falls on land).

Trincomalee climate by monthClimate by month

Normal weather for each month (1991–2020 averages)

The best time to visit Trincomalee is from January to March: highs of 85 °F to 91 °F, about 7 rainy days a month and 8 hours of sunshine a day.

Cyclone season: from October to January, peaking in December. In the last 30 years (1996–2025), 7 tropical cyclones passed within 93 mi of Trincomalee, about 2 every 10 years; one of them with hurricane-force winds (74 mph or more). The most recent: Ditwah, in November 2025.

85° 74°

JanJ
87° 74°

FebF
91° 75°

MarM
93° 77°

AprA
94° 79°

MayM
94° 79°

JunJ
94° 78°

JulJ
93° 78°

AugA
93° 77°

SepS
90° 76°

OctO
86° 75°

NovN
85° 74°

DecD

Highs and lows
Monthly rainfall
Best time

Month	High	Low	Rain	Rainy daysDays	Sun (h/day)	Water	Waves	Cyclones
JanuaryJan	85°	74°	5.81 in	8	7.3	81°	3.6 ft	1
FebruaryFeb	87°	74°	3.50 in	5	8.3	82°	3.1 ft	–
MarchMar	91°	75°	1.59 in	6	8.7	84°	2.2 ft	–
AprilApr	93°	77°	2.60 in	11	8.7	86°	1.8 ft	–
MayMay	94°	79°	2.37 in	8	8.1	86°	2.4 ft	–
JuneJun	94°	79°	1.05 in	2	8.1	85°	3.0 ft	–
JulyJul	94°	78°	1.61 in	4	7.8	84°	2.8 ft	–
AugustAug	93°	78°	2.93 in	6	8.3	84°	2.8 ft	–
SeptemberSep	93°	77°	3.40 in	8	8.4	84°	2.6 ft	–
OctoberOct	90°	76°	9.95 in	18	7.2	84°	2.3 ft	1
NovemberNov	86°	75°	15.75 in	20	6.3	83°	3.0 ft	2
DecemberDec	85°	74°	12.76 in	16	6.5	81°	3.8 ft	3

Month	Water	Waves	Cyclones
Jan	81°	3.6 ft	1
Feb	82°	3.1 ft	–
Mar	84°	2.2 ft	–
Apr	86°	1.8 ft	–
May	86°	2.4 ft	–
Jun	85°	3.0 ft	–
Jul	84°	2.8 ft	–
Aug	84°	2.8 ft	–
Sep	84°	2.6 ft	–
Oct	84°	2.3 ft	1
Nov	83°	3.0 ft	2
Dec	81°	3.8 ft	3

Days: rainy days in the month. Sun: hours a day.

A normal year brings 63.30 in of rain on about 111 days and about 2,850 hours of sunshine.

Cyclones: how many tropical cyclones (tropical storms, hurricanes and typhoons) passed within 93 mi in each month from 1996 to 2025, according to IBTrACS (NOAA).

1991–2020 averages. Highs, lows and rainfall: TerraClimate; rainy days (0.04 in or more): NASA POWER (MERRA-2); sunshine hours: estimated from solar radiation; water: NOAA OISST; waves (average height): ERA5, 2011–2020. Normals are not a forecast: any given year can turn out very different. Sources and licenses

Temperature

Now88 °Ffeels like 96 °F

Tomorrow76 / 89 °F

It's 88 °F now (feels like 96 °F). Today, 77 °F to 90 °F; tomorrow, 76 °F to 89 °F.

Chance of rain

Today 16%
Fri 30 80% 0.41 in
Sat 31 33% 0.04 in
Sun 1 51% 0.04 in
Mon 2 84% 0.24 in
Tue 3 81% 0.34 in
Wed 4 78% 0.12 in

Today the chance of rain reaches 16%. The next day with likely rain is Friday 30: 80% and 0.41 in.

Recent rain: last 24 hours, 0.01 in; last 3 days, 0.92 in; last 7 days, 4.87 in.

Humidity and dew point

Humidity63%

Dew point74 °F

Humidity is 63% now and the dew point is 74 °F. With a dew point this high, it feels muggy.

The dew point is the temperature at which the air becomes saturated: the higher it is, the heavier the air feels.

Visibility and fog

Now15 migood

Clouds86%

Visibility is good now (15 mi). No fog expected today.

The model gives visibility up to about 15 mi: beyond that, the horizon is clear.

UV index

Now2

Today's peak9very high

Fri 30: 9 · Sat 31: 9 · Sun 1: 10

Index	Level	What to do
0–2	low	No special protection needed.
3–5	moderate	Hat, sunglasses and sunscreen around midday.
6–7	high	Sunscreen, hat and shade between 12 and 4 pm.
8–10	very high	Avoid the midday sun; reflection off the water adds to it.
11+	extreme	Avoid the sun between 11 am and 5 pm; protect yourself even if it is cloudy.

Reflection off water and sand adds radiation: protect yourself more on a boat or at the beach.

Barometric pressure

↗ Rising Anglers say fish bite less for a while
→ Steady · now Anglers expect normal activity
↘ Falling Anglers say fish feed more before the change

29.7029.8029.9030.00 29.97

Steady now (−0.03 inHg in 3 hours). Over the next 48 hours: +0.04 inHg. Steady pressure: anglers expect normal activity. Fast changes, either way, tend to affect fishing.

Air and pollen

Air qualityModerate · 45

Saharan dustNo

Previous days

The weather over the last 30 days, as the models analyzed it. Tap a day to see it hour by hour.

Day	Sky	Low / high	Rain	Max wind
Wed 28	Light drizzle	78 / 89 °F	0.04 in	12 mph SW
Tue 27	Light rain	73 / 87 °F	0.19 in	11 mph WSW
Mon 26	Light showers	75 / 78 °F	2.93 in	9 mph WSW
Sun 25	Light showers	76 / 87 °F	0.52 in	12 mph SW
Sat 24	Light showers	76 / 87 °F	0.66 in	9 mph WSW
Fri 23	Light rain	75 / 90 °F	0.22 in	11 mph WSW
Thu 22	Showers	76 / 88 °F	0.96 in	8 mph WSW

Show all 30 days

Day	Sky	Low / high	Rain	Max wind
Wed 21	Showers	77 / 88 °F	1.16 in	6 mph SW
Tue 20	Light showers	77 / 88 °F	0.73 in	8 mph W
Mon 19	Showers	76 / 90 °F	0.61 in	9 mph WSW
Sun 18	Light showers	76 / 91 °F	0.37 in	7 mph SW
Sat 17	Showers	76 / 91 °F	0.78 in	7 mph SW
Fri 16	Showers	75 / 90 °F	0.73 in	7 mph SW
Thu 15	Showers	76 / 89 °F	0.76 in	7 mph SW
Wed 14	Heavy showers	76 / 87 °F	2.56 in	5 mph SSE
Tue 13	Light showers	77 / 87 °F	0.72 in	8 mph NE
Mon 12	Light showers	75 / 91 °F	0.21 in	11 mph NE
Sun 11	Light showers	77 / 91 °F	0.50 in	8 mph ENE
Sat 10	Drizzle	77 / 92 °F	0.14 in	6 mph NE
Fri 9	Light drizzle	76 / 91 °F	0.13 in	6 mph ESE
Thu 8	Light showers	78 / 90 °F	0.46 in	7 mph ESE
Wed 7	Light drizzle	79 / 91 °F	0.08 in	8 mph ESE
Tue 6	Partly cloudy	75 / 93 °F	0	8 mph E
Mon 5	Drizzle	76 / 93 °F	0.12 in	6 mph WSW
Sun 4	Drizzle	76 / 91 °F	0.19 in	7 mph S
Sat 3	Showers	77 / 92 °F	0.38 in	7 mph ESE
Fri 2	Light drizzle	75 / 92 °F	0.01 in	8 mph E
Thu 1	Light drizzle	77 / 94 °F	0.08 in	7 mph SW
Wed 30	Drizzle	77 / 95 °F	0.15 in	8 mph WSW
Tue 29	Light drizzle	77 / 96 °F	0.08 in	10 mph WSW

These are the models at the start of each day (ECMWF and GFS; waves from Météo-France), not readings from a weather station: there can be differences at specific spots.

Questions about the weather in TrincomaleeQuestions

What's the weather like today in Trincomalee?

Overcast, from 77 °F to 90 °F, with a gentle breeze from the west-southwest (8 mph) and a 16% chance of rain.

Will it rain tomorrow in Trincomalee?

On Friday 30 the chance of rain is 80% (0.41 in): showers.

How warm will it be this week?

Between a low of 74 °F and a high of 90 °F; the warmest day, Thursday 29.

What's the UV index today?

It reaches 9 (very high). Avoid the midday sun; reflection off the water adds to it.

Is the pressure rising or falling?

It's 29.80 inHg and steady: +0.06 inHg over the last 24 hours.

When is the best time to visit Trincomalee?

The best time to visit Trincomalee is from January to March: highs of 85 °F to 91 °F, about 7 rainy days a month and 8 hours of sunshine a day.

What is the weather like in Trincomalee in October?

In October, Trincomalee normally sees highs of 90 °F and lows of 76 °F, with about 18 rainy days (9.95 in for the month) and 7 hours of sunshine a day. The sea is around 84 °F. These are 1991–2020 averages.

What are the warmest and wettest months in Trincomalee?

The warmest is May, with average highs of 94 °F, and the coldest January, with lows of 74 °F. The wettest is November (15.75 in) and the driest, June.

When is cyclone season in Trincomalee?

Cyclone season: from October to January, peaking in December. In the last 30 years (1996–2025), 7 tropical cyclones passed within 93 mi of Trincomalee, about 2 every 10 years; one of them with hurricane-force winds (74 mph or more). The most recent: Ditwah, in November 2025.

More about Trincomalee today

Weather near Trincomalee

Only places with a different forecast: spots a few miles apart share the same model cell and wouldn't add anything.

Learn more

Weather: Open-Meteo, CC BY 4.0, with the best model for each spot and lead time (NOAA HRRR and NBM in the U.S., Météo-France AROME, DWD ICON-EU, ECMWF IFS and NOAA GFS); ECMWF grid point 17 mi away. The comparison also uses ICON (DWD), AIFS (ECMWF) and ARPEGE (Météo-France). Outlook: ECMWF 46-day and SEAS5. Chance of rain from ensemble models (ECMWF, GEFS and NBM). UV, air quality and pollen: CAMS (Copernicus).

Forecast from Open-Meteo (CC BY 4.0) with models from ECMWF, NOAA, Météo-France, DWD, Copernicus Marine and CAMS. Updated at 2:52 pm (local time).

Spotted a mistake? Tell us · Where the weather and sea data come from