Weather in Dehiwala-Mount Lavinia

14-day forecast · updated today, Thursday, October 29, at 4:35 am (GMT+5:30)

Now · drizzle 75 °F

Feels like: 83 °F
Low / high: 75 / 83 °F
Rain: 94% · 0.79 in
Wind: 4 mph ESE

→ 29.85 inHg · steady UV 7 · high

Today in Dehiwala-Mount Lavinia: showers, 75 °F to 83 °F, with a 94% chance of rain (0.79 in) and a light breeze from the east-southeast (4 mph). Tomorrow, light drizzle, 73 °F to 87 °F and a 46% chance of rain. The warmest day of the week is Friday 30, at 87 °F.

Temperatures for the next 14 days

83° 75°
Today
87° 73°
Fri 30
86° 73°
Sat 31
85° 72°
Sun 1
86° 73°
Mon 2
85° 72°
Tue 3
84° 73°
Wed 4
88° 73°
Thu 5
87° 73°
Fri 6
86° 73°
Sat 7
85° 72°
Sun 8
85° 73°
Mon 9
85° 71°
Tue 10
85° 71°
Wed 11

Day by day

Day	Sky	Low / high	Rain	Max wind	Max wave	High tides	Model
Today · 29	Showers	75 / 83 °F	94% · 0.79 in	6 mph SSE	4.5 ft	3:26 am · 3:18 pm	ECMWF
Fri 30	Light drizzle	73 / 87 °F	46% · 0.02 in	7 mph S	3.7 ft	4:00 am · 3:49 pm	ECMWF
Sat 31	Drizzle	73 / 86 °F	66% · 0.17 in	7 mph ENE	3.2 ft	4:35 am · 4:25 pm	ECMWF
Sun 1	Drizzle	72 / 85 °F	73% · 0.20 in	6 mph SSE	2.4 ft	5:13 am · 5:14 pm	ECMWF
Mon 2	Drizzle	73 / 86 °F	67% · 0.12 in	8 mph S	2.3 ft	6:06 am · 8:03 pm	ECMWF
Tue 3	Light drizzle	72 / 85 °F	59% · 0.05 in	8 mph S	2.8 ft	8:17 am · 10:30 pm	ECMWF
Wed 4	Heavy drizzle	73 / 84 °F	67% · 0.35 in	5 mph ENE	2.8 ft	10:10 am · 11:24 pm	ECMWF
Thu 5	Showers	73 / 88 °F	83% · 0.61 in	3 mph ENE	2.7 ft	11:17 am	ECMWF
Fri 6	Light showers	73 / 87 °F	88% · 0.38 in	4 mph ESE	2.5 ft	12:02 am · 12:05 pm	ECMWF
Sat 7	Heavy drizzle	73 / 86 °F	86% · 0.28 in	5 mph NE	3.0 ft	12:35 am · 12:45 pm	ECMWF
Sun 8	Heavy drizzle	72 / 85 °F	84% · 0.33 in	5 mph E	3.0 ft	1:06 am · 1:19 pm	ECMWF
Mon 9	Heavy drizzle	73 / 85 °F	96% · 0.31 in	5 mph ESE	2.7 ft	1:36 am · 1:50 pm	ECMWF
Tue 10	Drizzle	71 / 85 °F	92% · 0.35 in	7 mph SE	2.6 ft	2:04 am · 2:18 pm	ECMWF
Wed 11	Light drizzle	71 / 85 °F	90% · 0.17 in	4 mph NE	2.6 ft	2:32 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	Drizzle	Drizzle	Drizzle	Drizzle	Showers	Drizzle	Light drizzle	Overcast
Temperature	77°	75°	76°	81°	83°	80°	77°	76°
Chance of rain	78%	89%	83%	91%	91%	70%	43%	31%
Rain	0.02 in	0.03 in	0.02 in	0.04 in	0.12 in	0.02 in	0.00 in	0.00 in
Wind (mph)	3 ESE	4 ESE	4 ESE	4 S	6 SW	4 SSW	4 SE	5 ESE
Humidity	96%	98%	97%	91%	82%	90%	98%	98%
UV	0	0	0	4	6	1	0	0
Model	ECMWF	ECMWF	ECMWF	ECMWF	ECMWF	ECMWF	ECMWF	ECMWF

Do the models agree?

Low confidence

They don't agree on rain on Saturday 31: it may change, so check again closer to the day.

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	83°	87°	86°	85°	86°	85°	84°
AIFS	86°	88°	87°	87°	87°	87°	87°
GFS	85°	87°	87°	87°	85°	86°	86°
ICON	87°	89°	91°	91°	90°	90°	89°
Confidence	high	high	medium	medium	high	medium	high

Do the models agree? · Rain
Rain	Today	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3	Wed 4
ECMWF	0.79 in	0.02 in	0.17 in	0.20 in	0.12 in	0.05 in	0.35 in
AIFS	0.21 in	0.05 in	0.24 in	0.19 in	0.40 in	0.73 in	0.50 in
GFS	0.56 in	0.05 in	0.02 in	0.07 in	0.19 in	0	0
ICON	0.18 in	0.02 in	0	0	0	0.06 in	0.09 in
Confidence	medium	medium	low	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	616	717	716	617	819	817	514
AIFS	7	6	3	5	6	3	3
GFS	1111	99	1110	139	129	910	119
ICON	618	616	515	617	616	617	413
Confidence	high	high	medium	medium	high	high	medium

Chance of rain from the ensemble models

Model	Today	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3	Wed 4
ECMWF (51 scenarios)	94%	46%	66%	73%	67%	59%	67%
GFS (GEFS, 31 scenarios)	100%	23%	26%	42%	57%	55%	48%

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 +1.3 °F	A bit below −44%	A bit above +1.4 °F	—
Nov 9 – Nov 15Nov 9–Nov 15	A bit above +1.1 °F	Normal	A bit above +1.1 °F	—
Nov 16 – Nov 22Nov 16–Nov 22	A bit above +1.3 °F	Normal	A bit above +0.9 °F	84° / 79°
Nov 23 – Nov 29Nov 23–Nov 29	A bit above +1.3 °F	Normal	A bit above +0.9 °F	84° / 79°
Nov 30 – Dec 6Nov 30–Dec 6	A bit above +1.3 °F	A bit above +26%	A bit above +0.9 °F	85° / 79°

Coming months

When	TemperatureTemp.	Rain	Sea
November	A bit above +1.8 °F	A bit above +22%	Above +1.8 °F
December	A bit above +2.2 °F	A bit above +44%	Above +2.0 °F
January	A bit above +2.5 °F	Normal	Above +2.3 °F
February	Above +3.1 °F	A bit below −42%	Above +2.5 °F
March	Above +3.1 °F	A bit below −45%	Above +2.5 °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.

Dehiwala-Mount Lavinia climate by monthClimate by month

Normal weather for each month (1991–2020 averages)

The best time to visit Dehiwala-Mount Lavinia is from January to February and from July to August: highs of 87 °F to 90 °F, about 11 rainy days a month and 7 hours of sunshine a day.

Tropical cyclones rarely pass near Dehiwala-Mount Lavinia: one within 93 mi in the last 30 years (1996–2025), Ockhi, in November 2017.

89° 73°

JanJ
90° 74°

FebF
90° 76°

MarM
91° 77°

AprA
89° 79°

MayM
88° 78°

JunJ
87° 78°

JulJ
87° 78°

AugA
87° 77°

SepS
87° 76°

OctO
88° 75°

NovN
88° 74°

DecD

Highs and lows
Monthly rainfall
Best time

Month	High	Low	Rain	Rainy daysDays	Sun (h/day)	Water	Waves
JanuaryJan	89°	73°	3.05 in	8	6.5	82°	4.1 ft
FebruaryFeb	90°	74°	3.81 in	7	7.1	83°	3.7 ft
MarchMar	90°	76°	5.71 in	11	7.5	84°	3.3 ft
AprilApr	91°	77°	11.44 in	21	6.7	86°	4.0 ft
MayMay	89°	79°	14.43 in	21	6.0	85°	5.8 ft
JuneJun	88°	78°	8.28 in	19	5.9	83°	7.1 ft
JulyJul	87°	78°	5.39 in	14	6.0	82°	7.2 ft
AugustAug	87°	78°	4.68 in	13	6.2	81°	6.7 ft
SeptemberSep	87°	77°	9.24 in	17	6.1	82°	6.1 ft
OctoberOct	87°	76°	18.07 in	23	5.5	83°	4.9 ft
NovemberNov	88°	75°	16.45 in	23	5.4	83°	4.0 ft
DecemberDec	88°	74°	7.24 in	16	5.6	83°	4.0 ft

Month	Water	Waves
Jan	82°	4.1 ft
Feb	83°	3.7 ft
Mar	84°	3.3 ft
Apr	86°	4.0 ft
May	85°	5.8 ft
Jun	83°	7.1 ft
Jul	82°	7.2 ft
Aug	81°	6.7 ft
Sep	82°	6.1 ft
Oct	83°	4.9 ft
Nov	83°	4.0 ft
Dec	83°	4.0 ft

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

A normal year brings 107.80 in of rain on about 193 days and about 2,250 hours of sunshine.

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

Now75 °Ffeels like 83 °F

Tomorrow73 / 87 °F

It's 75 °F now (feels like 83 °F). Today, 75 °F to 83 °F; tomorrow, 73 °F to 87 °F.

Chance of rain

Today 94% 0.79 in
Fri 30 46% 0.02 in
Sat 31 66% 0.17 in
Sun 1 73% 0.20 in
Mon 2 67% 0.12 in
Tue 3 59% 0.05 in
Wed 4 67% 0.35 in

Today the chance of rain reaches 94%, with 0.79 in in total. The next day with likely rain is Friday 30: 46% and 0.02 in.

Recent rain: last 24 hours, 0.45 in; last 3 days, 2.78 in; last 7 days, 7.33 in.

Humidity and dew point

Humidity97%

Dew point74 °F

Humidity is 97% now and the dew point is 74 °F. With a dew point this high, it feels muggy. The temperature is very close to the dew point: fog may form.

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

Visibility and fog

Now9.5 migood

Clouds94%

Visibility is good now (9.5 mi). No fog expected today.

UV index

Now0

Today's peak7high

Fri 30: 9 · 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 29.96

Steady now (+0.01 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 qualityFair · 29

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	Drizzle	77 / 86 °F	0.37 in	11 mph SSW
Tue 27	Light rain	74 / 87 °F	0.31 in	8 mph S
Mon 26	Showers	75 / 79 °F	2.55 in	10 mph SW
Sun 25	Showers	76 / 85 °F	1.36 in	11 mph SSW
Sat 24	Light showers	74 / 88 °F	0.54 in	9 mph SSW
Fri 23	Showers	75 / 83 °F	0.96 in	10 mph S
Thu 22	Showers	75 / 80 °F	1.28 in	5 mph SSE

Show all 30 days

Day	Sky	Low / high	Rain	Max wind
Wed 21	Showers	76 / 84 °F	1.65 in	5 mph WSW
Tue 20	Drizzle	77 / 88 °F	0.22 in	7 mph N
Mon 19	Light drizzle	76 / 89 °F	0.06 in	8 mph WSW
Sun 18	Drizzle	73 / 89 °F	0.13 in	6 mph ESE
Sat 17	Light showers	74 / 88 °F	0.37 in	7 mph SSE
Fri 16	Light showers	74 / 87 °F	0.61 in	9 mph SSE
Thu 15	Showers	75 / 81 °F	1.26 in	11 mph SSE
Wed 14	Showers	75 / 88 °F	1.17 in	6 mph SSE
Tue 13	Light showers	74 / 90 °F	0.48 in	5 mph E
Mon 12	Showers	73 / 90 °F	1.19 in	6 mph SSE
Sun 11	Light showers	74 / 88 °F	0.46 in	5 mph SE
Sat 10	Light showers	75 / 87 °F	0.84 in	4 mph SE
Fri 9	Drizzle	75 / 88 °F	0.26 in	5 mph SE
Thu 8	Light showers	74 / 89 °F	0.54 in	6 mph ESE
Wed 7	Light showers	75 / 90 °F	0.31 in	7 mph ESE
Tue 6	Light drizzle	74 / 90 °F	0.11 in	6 mph ESE
Mon 5	Drizzle	75 / 89 °F	0.20 in	7 mph E
Sun 4	Heavy drizzle	76 / 89 °F	0.24 in	5 mph ENE
Sat 3	Light drizzle	74 / 89 °F	0.02 in	6 mph SSE
Fri 2	Heavy drizzle	76 / 90 °F	0.31 in	7 mph SE
Thu 1	Drizzle	77 / 89 °F	0.12 in	7 mph SW
Wed 30	Light drizzle	77 / 89 °F	0.04 in	10 mph W
Tue 29	Light drizzle	76 / 88 °F	0.11 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 Dehiwala-Mount LaviniaQuestions

What's the weather like today in Dehiwala-Mount Lavinia?

Showers, from 75 °F to 83 °F, with a light breeze from the east-southeast (4 mph) and a 94% chance of rain.

Will it rain tomorrow in Dehiwala-Mount Lavinia?

On Friday 30 the chance of rain is 46% (0.02 in): light drizzle.

How warm will it be this week?

Between a low of 72 °F and a high of 87 °F; the warmest day, Friday 30.

What's the UV index today?

It reaches 7 (high). Sunscreen, hat and shade between 12 and 4 pm.

Is the pressure rising or falling?

It's 29.85 inHg and steady: +0.07 inHg over the last 24 hours.

When is the best time to visit Dehiwala-Mount Lavinia?

The best time to visit Dehiwala-Mount Lavinia is from January to February and from July to August: highs of 87 °F to 90 °F, about 11 rainy days a month and 7 hours of sunshine a day.

What is the weather like in Dehiwala-Mount Lavinia in October?

In October, Dehiwala-Mount Lavinia normally sees highs of 87 °F and lows of 76 °F, with about 23 rainy days (18.07 in for the month) and 6 hours of sunshine a day. The sea is around 83 °F. These are 1991–2020 averages.

What are the warmest and wettest months in Dehiwala-Mount Lavinia?

The warmest is April, with average highs of 91 °F, and the coldest January, with lows of 73 °F. The wettest is October (18.07 in) and the driest, January.

More about Dehiwala-Mount Lavinia today

Weather near Dehiwala-Mount Lavinia

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 11 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 4:35 am (local time).

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