Sri Lanka

Mirissa Weather

Mirissa weather today, the 14-day forecast, and average temperature, rain and what to wear for every month — compared against Hong Kong. Best months to visit: Jan, Feb, Mar, Jun, Jul, Aug and Sep.

Mirissa current weather

Mirissa now (local time 13:15)

30°C

Drizzle

Feels like
35°
Humidity
66%
Wind
11 km/h

Next 7 days · what to wear

23° – 31°C

Rain likely on 7 of 7 days

👕 T-shirts, shorts and breathable fabrics; sunscreen and water; it's wet, so pack a compact umbrella.

Mirissa 14-day forecast

  1. Today

    10/4

    🌦️

    31°

    25°

    💧82%

  2. Mon

    10/5

    🌦️

    30°

    24°

    💧100%

  3. Tue

    10/6

    ⛈️

    30°

    24°

    💧100%

  4. Wed

    10/7

    🌦️

    30°

    23°

    💧88%

  5. Thu

    10/8

    ⛈️

    31°

    24°

    💧88%

  6. Fri

    10/9

    ⛈️

    29°

    23°

    💧100%

  7. Sat

    10/10

    ⛈️

    30°

    23°

    💧98%

  8. Sun

    10/11

    🌦️

    29°

    23°

    💧100%

  9. Mon

    10/12

    🌦️

    30°

    22°

    💧100%

  10. Tue

    10/13

    🌦️

    30°

    23°

    💧100%

  11. Wed

    10/14

    🌦️

    30°

    23°

    💧90%

  12. Thu

    10/15

    ⛈️

    30°

    24°

    💧88%

  13. Fri

    10/16

    ⛈️

    31°

    24°

    💧90%

  14. Sat

    10/17

    🌦️

    30°

    23°

    💧86%

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Best time to visit Mirissa

On temperature and rainfall, the most comfortable months in Mirissa are Jan, Feb, Mar, Jun, Jul, Aug and Sep. The hottest month is March (average high 30°C) and the coldest is July (average low 26°C).

Mirissa climate by month

MonthAvg highAvg lowRainHumidityvs Hong Kong
JanBest29°C24°C95 mm79%+10°C
FebBest30°C25°C79 mm78%+10°C
MarBest30°C26°C107 mm78%+8°C
Apr30°C27°C182 mm81%+5°C
May29°C27°C194 mm84%+1°C
JunBest29°C27°C106 mm85%-1°C
JulBest29°C26°C89 mm85%-2°C
AugBest29°C26°C115 mm84%-2°C
SepBest29°C26°C161 mm83%-1°C
Oct29°C26°C231 mm84%+1°C
Nov29°C26°C285 mm83%+5°C
Dec29°C25°C193 mm82%+8°C

Data: NASA POWER 2001–2020 climatology (MERRA-2, elevation-corrected); Hong Kong comparison uses HKO 1991–2020 normals.

Mirissa weather month by month: what to wear

Mirissa in OctoberThis month

October in Mirissa is warm to hot: average highs of 29°C and lows of 26°C, around 231 mm of rain (wet) and 84% humidity — about the same as Hong Kong.

👕 Short sleeves, plus a light layer for air-conditioned interiors; it's wet, so pack a compact umbrella; humid, so quick-dry fabrics help.

Mirissa in November

November in Mirissa is warm to hot: average highs of 29°C and lows of 26°C, around 285 mm of rain (very wet) and 83% humidity — about 5°C warmer than Hong Kong.

👕 Short sleeves, plus a light layer for air-conditioned interiors; it's wet, so pack a compact umbrella; humid, so quick-dry fabrics help.

Mirissa in December

December in Mirissa is warm to hot: average highs of 29°C and lows of 25°C, around 193 mm of rain (wet) and 82% humidity — about 8°C warmer than Hong Kong.

👕 Short sleeves, plus a light layer for air-conditioned interiors; it's wet, so pack a compact umbrella; humid, so quick-dry fabrics help.

Mirissa in JanuaryBest month

January in Mirissa is warm to hot: average highs of 29°C and lows of 24°C, around 95 mm of rain (some rain) and 79% humidity — about 10°C warmer than Hong Kong. It's one of the most comfortable months of the year to visit.

👕 Short sleeves, plus a light layer for air-conditioned interiors.

Mirissa in FebruaryBest month

February in Mirissa is warm to hot: average highs of 30°C and lows of 25°C, around 79 mm of rain (mostly dry) and 78% humidity — about 10°C warmer than Hong Kong. It's one of the most comfortable months of the year to visit.

👕 Short sleeves, plus a light layer for air-conditioned interiors.

Mirissa in MarchBest month

March in Mirissa is warm to hot: average highs of 30°C and lows of 26°C, around 107 mm of rain (some rain) and 78% humidity — about 8°C warmer than Hong Kong. It's one of the most comfortable months of the year to visit.

👕 T-shirts, shorts and breathable fabrics; sunscreen and water.

Mirissa in April

April in Mirissa is warm to hot: average highs of 30°C and lows of 27°C, around 182 mm of rain (wet) and 81% humidity — about 5°C warmer than Hong Kong.

👕 Short sleeves, plus a light layer for air-conditioned interiors; it's wet, so pack a compact umbrella; humid, so quick-dry fabrics help.

Mirissa in May

May in Mirissa is warm to hot: average highs of 29°C and lows of 27°C, around 194 mm of rain (wet) and 84% humidity — about the same as Hong Kong.

👕 Short sleeves, plus a light layer for air-conditioned interiors; it's wet, so pack a compact umbrella; humid, so quick-dry fabrics help.

Mirissa in JuneBest month

June in Mirissa is warm to hot: average highs of 29°C and lows of 27°C, around 106 mm of rain (some rain) and 85% humidity — about the same as Hong Kong. It's one of the most comfortable months of the year to visit.

👕 Short sleeves, plus a light layer for air-conditioned interiors; humid, so quick-dry fabrics help.

Mirissa in JulyBest month

July in Mirissa is warm to hot: average highs of 29°C and lows of 26°C, around 89 mm of rain (some rain) and 85% humidity — about 2°C colder than Hong Kong. It's one of the most comfortable months of the year to visit.

👕 Short sleeves, plus a light layer for air-conditioned interiors; humid, so quick-dry fabrics help.

Mirissa in AugustBest month

August in Mirissa is warm to hot: average highs of 29°C and lows of 26°C, around 115 mm of rain (some rain) and 84% humidity — about 2°C colder than Hong Kong. It's one of the most comfortable months of the year to visit.

👕 Short sleeves, plus a light layer for air-conditioned interiors; humid, so quick-dry fabrics help.

Mirissa in SeptemberBest month

September in Mirissa is warm to hot: average highs of 29°C and lows of 26°C, around 161 mm of rain (wet) and 83% humidity — about the same as Hong Kong. It's one of the most comfortable months of the year to visit.

👕 Short sleeves, plus a light layer for air-conditioned interiors; it's wet, so pack a compact umbrella; humid, so quick-dry fabrics help.

FAQ

›What is the best time to visit Mirissa?

On temperature and rainfall, the most comfortable months in Mirissa are Jan, Feb, Mar, Jun, Jul, Aug and Sep. The hottest month is March (average high 30°C) and the coldest is July (average low 26°C).

›What's the weather like in Mirissa in October, and what should I wear?

October in Mirissa is warm to hot: average highs of 29°C and lows of 26°C, around 231 mm of rain (wet) and 84% humidity — about the same as Hong Kong. What to wear: Short sleeves, plus a light layer for air-conditioned interiors; it's wet, so pack a compact umbrella; humid, so quick-dry fabrics help.

›What's the weather like in Mirissa in November, and what should I wear?

November in Mirissa is warm to hot: average highs of 29°C and lows of 26°C, around 285 mm of rain (very wet) and 83% humidity — about 5°C warmer than Hong Kong. What to wear: Short sleeves, plus a light layer for air-conditioned interiors; it's wet, so pack a compact umbrella; humid, so quick-dry fabrics help.

›When is the rainy season in Mirissa?

Mirissa is wettest in November, with about 285 mm on average, and driest in February, with about 79 mm.

›How cold does Mirissa get? Does it snow?

The coldest month is July, averaging 29°C by day and 26°C at night. Snow is very unlikely.

Planning a trip to Mirissa?

More Sri Lanka weather

Forecast data: Open-Meteo.com (CC BY 4.0), refreshed every 3 hours. Hottest month: March; coldest: July.