🇱🇰 Weather in Mirissa in January
This is what the weather in Mirissa (Sri Lanka) was like in January in 2017–2026.
Key facts at a glance
Avg. daytime high
28.6 °C
28.1 °C – 29.4 °C
Avg. night-time low
24.4 °C
23.8 °C – 24.9 °C
Avg. rain days in period
16.4
53 % of days · ≥ 1.0 mm
Avg. precipitation in period
133 mm
41.7 mm – 320 mm
Avg. cloud cover
62 %
This data source has no sunshine hours – average cloud cover shown instead.
Avg. sea temperature
–
Sea temperature unavailable for today (daily limit).
Extremes: Highest temperature 30.4 °C (30 Jan 2019) · Lowest temperature 21.6 °C (8 Jan 2018) · Avg. daily peak wind 17 km/h
Weather mix of all days
- 40Sunny
- 62Partly cloudy
- 44Cloudy
- 83Light rain
- 81Rain
Summary
- On average 28.6 °C during the day and 24.4 °C at night.
- On average 16.4 rain days (Rain day = at least 1.0 mm of precipitation) with 133 mm of precipitation in total.
- Prevailing: Light rain.
- Warmest year: 2019 (avg. 29.4 °C), coolest: 2021 (avg. 28.1 °C).
- Wettest year: 2024 (320 mm), driest: 2018 (41.7 mm).
- Extremes: 30.4 °C on 30 Jan 2019 and 21.6 °C on 8 Jan 2018.
Overall values from all 10 years. How is this calculated?
Charts
Temperatures per year
Average over your travel period
Precipitation & rain days
Year by year
2026
Avg. max28.3°Avg. min23.9°- Rain days
- 18 Rain days
- Precipitation
- 89.5 mm
- Avg. cloud cover
- 55 % cloudy
- Sea temperature
- –
Max 29.3 °C · Min 22.1 °C
2025
Avg. max28.3°Avg. min24.8°- Rain days
- 24 Rain days
- Precipitation
- 248 mm
- Avg. cloud cover
- 83 % cloudy
- Sea temperature
- –
Max 29.6 °C · Min 23.1 °C
2024
Avg. max28.8°Avg. min24.9°- Rain days
- 19 Rain days
- Precipitation
- 320 mm
- Avg. cloud cover
- 54 % cloudy
- Sea temperature
- –
Max 30.1 °C · Min 22.9 °C
2023
Avg. max28.2°Avg. min23.8°- Rain days
- 18 Rain days
- Precipitation
- 116 mm
- Avg. cloud cover
- 77 % cloudy
- Sea temperature
- –
Max 29.1 °C · Min 22.0 °C
2022
Avg. max28.8°Avg. min24.8°- Rain days
- 19 Rain days
- Precipitation
- 126 mm
- Avg. cloud cover
- 56 % cloudy
- Sea temperature
- –
Max 29.6 °C · Min 23.2 °C
2021
Avg. max28.1°Avg. min24.7°- Rain days
- 24 Rain days
- Precipitation
- 211 mm
- Avg. cloud cover
- 79 % cloudy
- Sea temperature
- –
Max 29.5 °C · Min 23.5 °C
2020
Avg. max29.1°Avg. min24.7°- Rain days
- 14 Rain days
- Precipitation
- 56.8 mm
- Avg. cloud cover
- 49 % cloudy
- Sea temperature
- –
Max 29.8 °C · Min 23.1 °C
2019
Avg. max29.4°Avg. min24.2°- Rain days
- 7 Rain days
- Precipitation
- 49.3 mm
- Avg. cloud cover
- 50 % cloudy
- Sea temperature
- –
Max 30.4 °C · Min 22.5 °C
2018
Avg. max28.4°Avg. min23.9°- Rain days
- 8 Rain days
- Precipitation
- 41.7 mm
- Avg. cloud cover
- 67 % cloudy
- Sea temperature
- –
Max 29.1 °C · Min 21.6 °C
2017
Avg. max28.9°Avg. min23.9°- Rain days
- 13 Rain days
- Precipitation
- 75.5 mm
- Avg. cloud cover
- 53 % cloudy
- Sea temperature
- –
Max 30.3 °C · Min 21.7 °C
Frequently asked questions
- How warm is it in Mirissa in January?
- Daytime highs averaged 28.6 °C, night-time lows 24.4 °C. The highest value of the past 10 years was 30.4 °C (30 Jan 2019), the lowest 21.6 °C (8 Jan 2018).
- How often does it rain in Mirissa in January?
- On average there were 16.4 rain days (at least 1 mm) with 133 mm of precipitation in total.
Check your exact travel dates
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Other destinations in January
Data sources
- Weather data
- Data obtained from the NASA Langley Research Center (LaRC) POWER Project funded through the NASA Earth Science/Applied Science Program
Reanalysis (weather model constrained by observations) on a coarse grid of about 50 km. Values represent a large area and can differ from local conditions, especially on islands, coasts and in mountains. No sunshine duration.
Reanalysis (weather model constrained by observations)
Reanalysis values represent a grid cell (approx. 25–50 km) and may differ from local measurements on coasts, islands and in mountains. - Sea temperature
- MUR SST data were provided by JPL under support by NASA MEaSUREs program; accessed via NOAA CoastWatch ERDDAP
Daily multi-scale ultra-high resolution (≈ 1 km) analysis of satellite measurements (infrared, microwave) and in-situ data. Represents the foundation temperature below the daily warm surface layer. (Satellite and in-situ analysis) - Place search
- Natural Earth (public domain) · GeoNames (CC BY 4.0) / OpenStreetMap (ODbL)