Mirissa Beach weather in October 2025

Expect 29°C daytime maximum temperatures in the shade with on average 6 hours of sunshine per day in Mirissa Beach in October. Check more long-term weather averages for Mirissa Beach in October before you book your next holiday to Sri Lanka in 2025/2026.

  • 29°C maximum daytime temperature in October in Mirissa Beach29
    29°C max day temperature
  • 6 hours of sunshine per day
  • 13 days with some rainfall in October in Mirissa Beach13
    13 days with some rainfall
  • 24°C minimum night-time temperature in October in Mirissa Beach24
    24°C min night temperature
  • 12 hours of daylight per day in October in Mirissa Beach12
    12 hours of daylight per day
  • High heat & humidity in October in Mirissa BeachH
    High heat & humidity
  • 305 mm monthly rainfall in October in Mirissa Beach305
    305 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in October in Mirissa Beach11
    11+ (Extreme) UV index
  • 28°C sea temperature in October in Mirissa Beach28
    28°C sea temperature

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The October weather guide for Sri Lanka (Mirissa Beach) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

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More about Sri Lanka

How hot is it in Mirissa Beach in October?

Daytime temperatures usually reach 29°C in Mirissa Beach in October with high heat and humidity, falling to 24°C at night.

How sunny is it in Mirissa Beach in October?

There are normally 6 hours of bright sunshine each day in Mirissa Beach in October - that's 51% of daylight hours.

How warm is the sea around Mirissa Beach in October?

The average sea temperature around Mirissa Beach in October is 28°C.

Does it rain in Mirissa Beach in October?

There are usually 13 days with some rain in Mirissa Beach in October and the average monthly rainfall is 305mm.

Mirissa Beach October sunrise & sunset times

Browse the sunrise and sunset times for Mirissa Beach in October 2025. Select a month to view Mirissa Beach sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st October 2025 05:56 18:00
Thursday, 16th October 2025 05:54 17:53
Friday, 31st October 2025 05:54 17:49

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