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Best time to go

When is the best time to visit Chilaw?

Find the best time to travel to Chilaw, Sri Lanka, with month-by-month weather, temperatures and precipitation. Also compare the local tourist crowds and the activities to do on-site.

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Find your best time to Chilaw

Check your ideal travel criteria and find the best time to go to Chilaw according to your preferences.
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When is the best time to visit Chilaw?

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Chilaw : best time to go in brief
The least favorable
June
Most pleasant sea
above 28.9°C
AprilMay
Best time to go

Best time to go to Chilaw

Our tips and advice for choosing the best time to travel to Chilaw.

The maximum temperature in Chilaw is on average 31°C over the year, with values generally ranging between 29°C in August and 33°C in March. The climate is very wet, with about 3,759 mm of precipitation per year. The monthly minimum is 86 mm in February and the maximum reaches 514 mm in June.

The climate is suitable for a trip to Chilaw in: January, February, March, April, May, July, August, September, October, November and December. Nevertheless, the months when the weather is really pleasant are January, February, March and December.

For swimming, the most favorable period for water temperature is April and May, with a water temperature above 28.9°C.

However, the best time to fully enjoy the beach and swimming is January, February, March and December.

In terms of crowd levels, the quietest periods are in May, June, October and November, while crowding is high in September and December.

Climate

Climate of Chilaw, Sri Lanka

Temperatures, rain, sunshine and humidity allow you to quickly read the climate month by month in Chilaw.

Climate charts in Chilaw

Temperatures

Average curve and range between monthly minima and maxima.
Average Min / max

Precipitation

Average monthly rainfall observed each month.
Average rainfall Days with significant precipitation (>5 mm) Days with precipitation

Average daily sunshine

Average sunshine hours per day by month.
Sunshine hours

Relative humidity

Average humidity observed over the months.
Average humidity

What is the climate type in Chilaw?

Chilaw has a monsoon climate, which is a type of tropical climate. More precisely, according to the Köppen-Geiger classification, it is a tropical monsoon climate (Am).

Activities

What to do in Chilaw and the best time to go depending on your interests?

Identify the best times for each travel desire in Chilaw and the activities you wish to do there.

Activity calendar

Each dot indicates, month by month, whether conditions are more or less favorable in Chilaw.

Very favorable Potentially favorable Unfavourable
Activity Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec.
Beach and swimming
Nature and landscapes
Visitor numbers

Crowd levels and tourist seasons

Compare the busiest periods and the quieter months to plan your trip to Chilaw according to the atmosphere you seek.

Peak crowds
December
High season
September
Mid-season
JanuaryFebruaryMarchAprilJulyAugust
Quieter period
MayJuneOctoberNovember
Crowds at a glance

How do visitor numbers change in Chilaw?

Visitor numbers in Chilaw vary significantly depending on the time of year. The choice of month can therefore really change the atmosphere of the trip: livelier in high season, more relaxed and quieter in low season.

The high season is concentrated mainly in September and December, with more visitors, a livelier atmosphere and often increased demand for accommodations.

To travel with fewer crowds, the months of January, February, March, April, May, June, July, August, October and November are generally the most interesting in terms of crowds.

Updated on 15/09/2026

Visitor index month by month

An index from 0 to 100 to visualize how visitor numbers vary over the year.
Average score
46/100
Nearby

Destinations near Chilaw

Compare cities and destinations near Chilaw to find an alternative travel time, plan the rest of your stay, or spot an alternative destination.

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Frequently asked questions

Best time to go to Chilaw: Frequently asked questions

Short answers to the questions we most often ask ourselves before booking.

The best weather conditions in Chilaw are concentrated over 4 months: January, February, March and December. It is during this period that the weather is considered good to ideal.

Regarding weather, the least favorable months in Chilaw are the following: June. Travel remains possible, but expect less pleasant conditions and a more flexible itinerary.

Precipitation is concentrated mainly in these months: May, June, July, August and October. The peak occurs in June, with about 514 mm of precipitation spread over approximately 21 wet days. Conversely, the driest month is February, with about 86 mm.

The hottest month in Chilaw is March, with an average of 33°C during the day and 28°C at night. The coolest is August, with 29°C during the day and 27°C at night.

Swimming is most pleasant when the water temperature exceeds 29°C, that is during these months: April and May. The peak is reached in April, with about 30°C on average.

The sun is at its most generous in May, with about 11.6 hours of sunshine per day. The darkest month is November, with 8.5 hours per day.

Visitor levels are significantly higher during these months: September and December. For a quieter trip, aim for January, February, March, April, May, June, July, August, October and November. Over the year, the average visitor index is 46/100.

We detail the month-by-month weather of 12 nearby destinations, including Kuliyapitiya, Negombo and Puttalam. Compare them to build a coherent itinerary: conditions can vary from one city to another, even over short distances.
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