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Dehiwala-Mount Lavinia

Weather in Дехивала-Маунт-Лавиния by month: what to expect

Photo: Y2, CC BY-SA 4.0

Weather overview

The weather in Дехивала-Маунт-Лавиния remains warm year-round, with only subtle shifts in temperature and rainfall defining the seasons. The city enjoys a tropical climate, where the ocean breeze softens the heat, making even the warmest months comfortable for exploring. If you prefer drier conditions, January through April offer the most stable weather, while May to October brings heavier rains and higher humidity.

Unlike many tropical destinations, Дехивала-Маунт-Лавиния doesn’t have a sharp contrast between seasons. The dry months see plenty of sunshine, while the rainy season—though wetter—still allows for travel, with downpours often brief and intense rather than prolonged. The ocean stays warm throughout the year, making beach activities possible in any month.

For those who dislike crowds, visiting Дехивала-Маунт-Лавиния in the shoulder seasons—November or December—can be a good compromise. The weather is pleasant, with fewer tourists, and the landscape remains lush from the recent rains.

Temperature

Temperatures in Дехивала-Маунт-Лавиния hover around +27 to +33 °C for most of the year, with only minor variations. The hottest months are March and April, when daytime highs can reach +32.5 to +33 °C, while nights stay warm at around +25 to +26 °C. Even in the coolest months, January and December, the mercury rarely drops below +24 °C at night or rises above +31 °C during the day.

The ocean near Дехивала-Маунт-Лавиния mirrors the air temperature, staying between +28 and +30 °C year-round. The warmest water is in April, when it reaches +30.7 °C, while the coolest months—July and August—see it dip slightly to +28.6 °C. This consistency makes swimming and water sports enjoyable in any season.

Despite the heat, the coastal location of Дехивала-Маунт-Лавиния ensures that humidity doesn’t feel oppressive most of the time. The exception is during the rainy season, when higher moisture levels can make the air feel heavier, though temperatures remain steady.

Average air temperature °C
Average air temperature
Month Minimum Maximum
January 24.2 31.4
February 24.9 32
March 25.3 32.5
April 25.8 33
May 26.8 32.1
June 26.8 31.7
July 26.6 31.3
August 26.5 31.1
September 25.9 31.1
October 25.3 31
November 24.6 31.2
December 24.5 31.3

Precipitation

Rainfall in Дехивала-Маунт-Лавиния is highly seasonal, with a clear divide between dry and wet periods. The driest months are February and March, when rainfall averages just 48.7 mm and 84.9 mm, respectively. During this time, showers are rare, and the weather is mostly sunny, making it ideal for outdoor activities.

The rainy season peaks in May and October, with monthly rainfall exceeding 400 mm. May is the wettest month, with an average of 511.8 mm, while October follows closely at 443.1 mm. Even in these months, rain usually comes in short, heavy bursts rather than all-day downpours, leaving plenty of dry spells for sightseeing.

Between the extremes, Дехивала-Маунт-Лавиния experiences transitional periods in June, July, November, and December, where rainfall is moderate—around 250 to 300 mm per month. These months can be a good choice for travelers who want to avoid both the driest crowds and the heaviest rains.

Precipitation amount mm
Precipitation amount
Month Precipitation
January 139.5
February 48.7
March 84.9
April 130.6
May 511.8
June 389.4
July 253.1
August 251.8
September 429.2
October 443.1
November 284.7
December 285.5

What to pack

When visiting Дехивала-Маунт-Лавиния in the dry season—January to April—light, breathable clothing is essential. Pack loose cotton or linen outfits to stay comfortable in the +28 to +33 °C heat, along with a wide-brimmed hat and sunglasses for sun protection. A light rain jacket or umbrella is still useful, as brief showers can occur even in the driest months.

During the rainy season—May to October—waterproof footwear and quick-dry clothing become more important. A compact umbrella or a waterproof cover for your bag will help you stay dry during sudden downpours. Since temperatures remain warm, you won’t need heavy layers, but a light sweater for air-conditioned spaces can be handy.

For any time of year in Дехивала-Маунт-Лавиния, swimwear, sunscreen, and insect repellent are must-haves. The ocean is warm year-round, so beach visits are always an option. If you plan to explore beyond the coast, comfortable walking shoes and a reusable water bottle will help you stay hydrated in the tropical climate.

Average monthly wind m/s
Average monthly wind
Month Wind speed
January 1.8
February 1.9
March 1.4
April 1.3
May 2.1
June 2.3
July 2.1
August 2.1
September 1.8
October 1.4
November 1.3
December 1.5

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