Weather in Chilaw

14-day forecast · updated today, Thursday, October 29, at 11:21 am (GMT+5:30)

Now · light drizzle 87 °F

Feels like: 97 °F
Low / high: 75 / 87 °F
Rain: 71% · 0.06 in
Wind: 11 mph SW

→ 29.88 inHg · steady UV 9 · very high

Today in Chilaw: light drizzle, 75 °F to 87 °F, with a 71% chance of rain (0.06 in) and a gentle breeze from the southwest (11 mph). Tomorrow, light drizzle, 74 °F to 88 °F and a 80% chance of rain. The warmest day of the week is Saturday 31, at 89 °F.

Temperatures for the next 14 days

87° 75°
Today
88° 74°
Fri 30
89° 74°
Sat 31
88° 72°
Sun 1
87° 73°
Mon 2
87° 73°
Tue 3
87° 73°
Wed 4
88° 74°
Thu 5
87° 74°
Fri 6
87° 73°
Sat 7
86° 72°
Sun 8
86° 73°
Mon 9
87° 73°
Tue 10
85° 72°
Wed 11

Day by day

Day	Sky	Low / high	Rain	Max wind	Max wave	High tides	Model
Today · 29	Light drizzle	75 / 87 °F	71% · 0.06 in	11 mph S	4.3 ft	3:22 am · 3:16 pm	ECMWF
Fri 30	Light drizzle	74 / 88 °F	80% · 0.08 in	10 mph SSW	3.1 ft	3:55 am · 3:47 pm	ECMWF
Sat 31	Light drizzle	74 / 89 °F	53% · 0.04 in	6 mph SW	2.7 ft	4:30 am · 4:22 pm	ECMWF
Sun 1	Drizzle	72 / 88 °F	73% · 0.13 in	6 mph SSW	2.2 ft	5:09 am · 5:12 pm	ECMWF
Mon 2	Drizzle	73 / 87 °F	79% · 0.12 in	9 mph SSW	2.2 ft	6:01 am · 7:52 pm	ECMWF
Tue 3	Light drizzle	73 / 87 °F	79% · 0.07 in	9 mph SSW	2.6 ft	8:04 am · 11:11 pm	ECMWF
Wed 4	Drizzle	73 / 87 °F	69% · 0.19 in	5 mph SSE	2.4 ft	10:26 am · 11:49 pm	ECMWF
Thu 5	Light showers	74 / 88 °F	88% · 0.38 in	4 mph E	2.2 ft	11:29 am	ECMWF
Fri 6	Light showers	74 / 87 °F	94% · 0.47 in	3 mph E	2.0 ft	12:19 am · 12:11 pm	ECMWF
Sat 7	Heavy drizzle	73 / 87 °F	95% · 0.35 in	4 mph NE	2.0 ft	12:48 am · 12:47 pm	ECMWF
Sun 8	Light showers	72 / 86 °F	90% · 0.45 in	6 mph ENE	1.8 ft	1:16 am · 1:19 pm	ECMWF
Mon 9	Light showers	73 / 86 °F	98% · 1.04 in	4 mph NE	1.6 ft	1:44 am · 1:49 pm	ECMWF
Tue 10	Light showers	73 / 87 °F	96% · 0.40 in	4 mph ESE	1.6 ft	2:11 am · 2:17 pm	ECMWF
Wed 11	Light showers	72 / 85 °F	96% · 0.40 in	3 mph S	1.6 ft	2:38 am · 2:43 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	Light drizzle	Light drizzle	Mainly clear	Light drizzle	Light drizzle	Overcast	Overcast	Partly cloudy
Temperature	77°	75°	76°	82°	87°	85°	80°	77°
Chance of rain	28%	29%	28%	29%	66%	31%	16%	1%
Rain	0.00 in	0.01 in	0.00 in	0.00 in	0.00 in	0.00 in	0.00 in	0.00 in
Wind (mph)	7 S	7 SSE	7 SSE	8 S	11 SW	9 SW	7 S	7 SSE
Humidity	94%	99%	98%	85%	72%	74%	85%	91%
UV	0	0	0	5	9	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 today: 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	87°	88°	89°	88°	87°	87°	87°
AIFS	88°	89°	89°	89°	88°	88°	88°
GFS	86°	87°	88°	88°	87°	87°	87°
ICON	87°	88°	89°	88°	88°	88°	87°
Confidence	high	high	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	0.06 in	0.08 in	0.04 in	0.13 in	0.12 in	0.07 in	0.19 in
AIFS	0.09 in	0.07 in	0.17 in	0.14 in	0.47 in	0.87 in	0.52 in
GFS	0.07 in	0	0.00 in	0.02 in	0.09 in	0.08 in	0.21 in
ICON	0	0	0	0.01 in	0.01 in	0	0.09 in
Confidence	medium	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	1123	1019	612	614	919	916	513
AIFS	10	7	3	4	6	3	2
GFS	1118	912	911	99	910	910	89
ICON	819	616	514	414	615	516	514
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)	71%	80%	53%	73%	79%	79%	69%
GFS (GEFS, 31 scenarios)	84%	49%	16%	29%	67%	24%	34%

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, normal rain and a slightly warmer sea.

Next 6 weeks

When	TemperatureTemp.	Rain	Sea	Typical high / low
Nov 2 – Nov 8Nov 2–Nov 8	A bit above +1.4 °F	A bit below −45%	A bit above +1.6 °F	—
Nov 9 – Nov 15Nov 9–Nov 15	A bit above +1.1 °F	Normal	A bit above +1.6 °F	—
Nov 16 – Nov 22Nov 16–Nov 22	A bit above +1.3 °F	Normal	A bit above +1.3 °F	84° / 78°
Nov 23 – Nov 29Nov 23–Nov 29	A bit above +1.1 °F	Normal	A bit above +0.7 °F	84° / 78°
Nov 30 – Dec 6Nov 30–Dec 6	A bit above +1.3 °F	Normal	A bit above +0.5 °F	84° / 78°

Coming months

When	TemperatureTemp.	Rain	Sea
November	A bit above +1.8 °F	A bit above +32%	Above +2.0 °F
December	A bit above +2.3 °F	A bit above +31%	Above +2.0 °F
January	Above +2.7 °F	A bit below −33%	Above +2.3 °F
February	Above +3.1 °F	Below −52%	Above +2.5 °F
March	Above +3.2 °F	A bit below −40%	Above +2.7 °F

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.

Chilaw climate by monthClimate by month

Normal weather for each month (1991–2020 averages)

The best time to visit Chilaw is in January and in July: highs of 87 °F, about 8 rainy days a month and 7 hours of sunshine a day.

Cyclone season: from November to December, peaking in November. In the last 30 years (1996–2025), 3 tropical cyclones passed within 93 mi of Chilaw, about one every 10 years. The most recent: Ditwah, in November 2025.

87° 71°

JanJ
90° 72°

FebF
92° 75°

MarM
92° 76°

AprA
90° 79°

MayM
88° 79°

JunJ
87° 78°

JulJ
88° 78°

AugA
88° 77°

SepS
88° 76°

OctO
87° 74°

NovN
86° 73°

DecD

Highs and lows
Monthly rainfall
Best time

Month	High	Low	Rain	Rainy daysDays	Sun (h/day)	Water	Waves	Cyclones
JanuaryJan	87°	71°	1.94 in	6	7.3	82°	2.1 ft	–
FebruaryFeb	90°	72°	2.20 in	6	7.7	82°	2.0 ft	–
MarchMar	92°	75°	4.21 in	8	8.4	84°	2.0 ft	–
AprilApr	92°	76°	8.28 in	19	7.7	86°	2.6 ft	–
MayMay	90°	79°	7.18 in	17	6.7	85°	4.3 ft	–
JuneJun	88°	79°	3.12 in	15	6.7	83°	5.5 ft	–
JulyJul	87°	78°	2.02 in	10	6.7	81°	5.5 ft	–
AugustAug	88°	78°	1.95 in	11	7.0	81°	5.0 ft	–
SeptemberSep	88°	77°	4.00 in	15	7.0	82°	4.5 ft	–
OctoberOct	88°	76°	12.71 in	22	6.5	83°	3.3 ft	–
NovemberNov	87°	74°	11.24 in	22	5.9	83°	2.4 ft	2
DecemberDec	86°	73°	5.49 in	15	6.3	83°	2.3 ft	1

Month	Water	Waves	Cyclones
Jan	82°	2.1 ft	–
Feb	82°	2.0 ft	–
Mar	84°	2.0 ft	–
Apr	86°	2.6 ft	–
May	85°	4.3 ft	–
Jun	83°	5.5 ft	–
Jul	81°	5.5 ft	–
Aug	81°	5.0 ft	–
Sep	82°	4.5 ft	–
Oct	83°	3.3 ft	–
Nov	83°	2.4 ft	2
Dec	83°	2.3 ft	1

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

A normal year brings 64.34 in of rain on about 167 days and about 2,550 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

Now87 °Ffeels like 97 °F

Tomorrow74 / 88 °F

It's 87 °F now (feels like 97 °F). Today, 75 °F to 87 °F; tomorrow, 74 °F to 88 °F.

Chance of rain

Today 71% 0.06 in
Fri 30 80% 0.08 in
Sat 31 53% 0.04 in
Sun 1 73% 0.13 in
Mon 2 79% 0.12 in
Tue 3 79% 0.07 in
Wed 4 69% 0.19 in

Today the chance of rain reaches 71%, with 0.06 in in total. The next day with likely rain is Friday 30: 80% and 0.08 in.

Recent rain: last 24 hours, 0.26 in; last 3 days, 1.32 in; last 7 days, 7.63 in.

Humidity and dew point

Humidity74%

Dew point77 °F

Humidity is 74% now and the dew point is 77 °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

Clouds46%

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

UV index

Now9

Today's peak9very high

Fri 30: 10 · Sat 31: 10 · Sun 1: 9

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

29.8029.9030.00 29.97

Steady now (−0.03 inHg in 3 hours). Over the next 48 hours: +0.05 inHg. Steady pressure: anglers expect normal activity. Fast changes, either way, tend to affect fishing.

Air and pollen

Air qualityModerate · 53

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	Heavy drizzle	76 / 87 °F	0.31 in	11 mph SSW
Tue 27	Light drizzle	74 / 87 °F	0.04 in	8 mph SSW
Mon 26	Heavy showers	75 / 78 °F	3.70 in	10 mph SW
Sun 25	Showers	74 / 81 °F	1.58 in	11 mph SSW
Sat 24	Light showers	74 / 88 °F	0.45 in	12 mph SSW
Fri 23	Showers	75 / 85 °F	0.76 in	10 mph SSW
Thu 22	Showers	76 / 80 °F	1.43 in	7 mph SSW

Show all 30 days

Day	Sky	Low / high	Rain	Max wind
Wed 21	Showers	76 / 86 °F	1.58 in	7 mph SSW
Tue 20	Light showers	78 / 86 °F	0.60 in	6 mph SW
Mon 19	Light drizzle	76 / 88 °F	0.06 in	10 mph SW
Sun 18	Drizzle	75 / 89 °F	0.13 in	7 mph S
Sat 17	Light showers	74 / 88 °F	0.43 in	9 mph SSW
Fri 16	Light showers	74 / 88 °F	0.44 in	9 mph SSW
Thu 15	Showers	76 / 81 °F	1.69 in	9 mph S
Wed 14	Light showers	75 / 88 °F	0.81 in	6 mph SSW
Tue 13	Showers	76 / 88 °F	0.50 in	10 mph NE
Mon 12	Showers	75 / 90 °F	0.43 in	11 mph ENE
Sun 11	Light showers	75 / 90 °F	0.46 in	8 mph E
Sat 10	Light showers	75 / 89 °F	0.56 in	4 mph SSW
Fri 9	Showers	75 / 89 °F	0.74 in	5 mph S
Thu 8	Light showers	76 / 91 °F	0.48 in	4 mph ENE
Wed 7	Light showers	75 / 90 °F	0.30 in	5 mph SW
Tue 6	Drizzle	75 / 92 °F	0.12 in	7 mph WNW
Mon 5	Heavy drizzle	76 / 89 °F	0.20 in	7 mph SE
Sun 4	Showers	76 / 90 °F	0.85 in	7 mph ESE
Sat 3	Light showers	76 / 90 °F	0.33 in	8 mph SSW
Fri 2	Light showers	76 / 91 °F	0.48 in	7 mph SSE
Thu 1	Light drizzle	78 / 90 °F	0.08 in	8 mph SSW
Wed 30	Light drizzle	77 / 89 °F	0.01 in	11 mph SW
Tue 29	Light drizzle	76 / 89 °F	0.02 in	11 mph SSW

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 ChilawQuestions

What's the weather like today in Chilaw?

Light drizzle, from 75 °F to 87 °F, with a gentle breeze from the southwest (11 mph) and a 71% chance of rain.

Will it rain tomorrow in Chilaw?

On Friday 30 the chance of rain is 80% (0.08 in): light drizzle.

How warm will it be this week?

Between a low of 72 °F and a high of 89 °F; the warmest day, Saturday 31.

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 29.88 inHg and steady: +0.06 inHg over the last 24 hours.

When is the best time to visit Chilaw?

The best time to visit Chilaw is in January and in July: highs of 87 °F, about 8 rainy days a month and 7 hours of sunshine a day.

What is the weather like in Chilaw in October?

In October, Chilaw normally sees highs of 88 °F and lows of 76 °F, with about 22 rainy days (12.71 in for the month) and 7 hours of sunshine a day. The sea is around 83 °F. These are 1991–2020 averages.

What are the warmest and wettest months in Chilaw?

The warmest is March, with average highs of 92 °F, and the coldest January, with lows of 71 °F. The wettest is October (12.71 in) and the driest, January.

When is cyclone season in Chilaw?

Cyclone season: from November to December, peaking in November. In the last 30 years (1996–2025), 3 tropical cyclones passed within 93 mi of Chilaw, about one every 10 years. The most recent: Ditwah, in November 2025.

More about Chilaw today

Weather near Chilaw

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 15 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 11:21 am (local time).

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