Moratuwa, Sri Lanka — Weather in August 2026

Climate Overview

Moratuwa, Sri Lanka in August has hot conditions, with highs reaching 28.6°C (83°F) and afternoons the warmest part of the day. Rain falls on about 28 days this month, totalling around 219 mm. Sea temperature reaches 28.5°C (83°F).

This month falls at the end of Summer.

Temperatures remain fairly steady throughout August, with daily highs around 29°C (84°F).

August sees fairly even rainfall, totalling about 218 mm across the month.

The warmest days tend to fall around the 22th, averaging 28.7°C (84°F).

Monthly August Averages

Temperature

29°C / 25°C

Feels Like

34°C / 30°C

Rain

28 days · 219 mm

Sunshine

9.5h / day

Humidity

86% — Very Muggy

Wind

18 km/h

Wind Direction

WSW (251°)

Gusts

41 km/h

Daylight

12.3 h

Cloud Cover

85%

Clear Sky Days

UV Index

8.2 — Very High

Sea Temperature

29°C

Dew Point

24°C — Oppressive

Moon Phase

Waxing Crescent · 3%

Climate Charts

Daily averages based on historical data (2016–2025)

Daily Temperature

High Low

Daily Precipitation

Rainfall

Daily Sunshine

Sunshine

Daily Wind Speed

Wind Speed

Sun Position

Sunrise 06:05

Daylight 12.3h

Sunset 18:25

What to Expect

Daytime temperatures around 29°C (83°F) are ideal for full-day outdoor exploration. Keep afternoons flexible as tropical showers are common — they typically clear within an hour.

Rain most often builds later in the day, so mornings are typically the driest window and afternoon showers are more likely.

Recent yearly records for August have stayed close to the long-run average.

Compare Months

Month	Temp	Feels Like	Rain	Sun	Humidity	UV	Status	Details
January best	30°C / 23°C	35°C / 27°C	13days (115 mm) Wet	9.8h Good	75% Muggy	6.9 High	Fair	View Details
February	31°C / 24°C	37°C / 28°C	9days (70 mm) Wet	10.6h Excellent	74% Muggy	8.5 Very High	Poor	View Details
March	31°C / 25°C	38°C / 30°C	18days (120 mm) Wet	10.5h Excellent	78% Humid	8.9 Very High	Wet	View Details
April	31°C / 25°C	38°C / 31°C	26days (171 mm) Wet	10.2h Excellent	82% Humid	8.7 Very High	Wet	View Details
May	30°C / 26°C	36°C / 31°C	30days (372 mm) Wet	8.4h Good	86% Very Muggy	7.3 Very High	Wet	View Details
June	29°C / 25°C	34°C / 30°C	29days (265 mm) Wet	9.5h Good	86% Very Muggy	7.8 Very High	Wet	View Details
July	29°C / 25°C	34°C / 30°C	28days (203 mm) Wet	9.5h Good	85% Humid	7.7 Very High	Wet	View Details
August	29°C / 25°C	34°C / 30°C	28days (219 mm) Wet	9.5h Good	86% Very Muggy	8.2 Very High	Wet	View Details
September	29°C / 25°C	34°C / 30°C	28days (245 mm) Wet	9.1h Good	86% Very Muggy	8.2 Very High	Wet	View Details
October	29°C / 24°C	34°C / 29°C	29days (334 mm) Wet	8.5h Good	86% Very Muggy	7.8 Very High	Wet	View Details
November	29°C / 24°C	35°C / 29°C	25days (389 mm) Wet	8h Good	86% Very Muggy	7.1 Very High	Wet	View Details
December best	29°C / 24°C	35°C / 27°C	18days (182 mm) Wet	9.4h Good	82% Humid	7.4 Very High	Wet	View Details

What to Wear

Summer clothing like shorts, t-shirts, and sundresses will be comfortable. Bring a light cardigan for air-conditioned spaces.

A waterproof jacket or compact umbrella is recommended for occasional showers.

Packing List

UmbrellaWaterproof jacketWaterproof shoesBreathable clothingSunscreen (SPF 30+)Sun hatSunglasses

Frequently Asked Questions

Expand all

Is August a good time to visit Moratuwa?

August is typically wet for visiting Moratuwa, with average highs of 29°C (83°F) and around 28 rainy days. Moratuwa, Sri Lanka in August has hot conditions, with highs reaching 28.6°C (83°F) and afternoons the warmest part of t

Does it rain a lot in Moratuwa in August?

Moratuwa typically sees around 28 rainy days in August with 219 mm (8.6 in) of total rainfall. Pack a waterproof jacket.

Does it get cold at night in Moratuwa in August?

Nights stay pleasantly warm in Moratuwa during August, around 25°C (77°F). Light evening wear is sufficient.

What should I pack for Moratuwa in August?

With highs of 29°C (83°F) and lows of 25°C (77°F) in August, we recommend: Umbrella, Waterproof jacket, Waterproof shoes, Breathable clothing, Sunscreen (SPF 30+). Comfortable walking shoes are essential.

Is August among the best months weather-wise in Moratuwa?

August is not the most favourable month weather-wise in Moratuwa. Consider visiting during months with milder temperatures or less rainfall for a better experience.

What is the UV index in Moratuwa in August?

The average UV index in Moratuwa during August is 8 (very high). Strong sun protection is essential — SPF 50+, protective clothing, and avoid prolonged outdoor exposure during peak hours.

How many hours of daylight are there in Moratuwa in August?

Moratuwa gets approximately 12 hours of daylight per day in August, with around 10 hours of sunshine.

Does it snow in Moratuwa in August?

Snow is uncommon in Moratuwa during August based on 10-year climate averages.

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