Mirissa Weather in January
January in Mirissa sees daytime temperatures around 30°C (86°F) and lows of 24°C (75°F) at night. With around 86 mm (3.4 in) of rainfall expected, it's worth packing a rain jacket.
Rainfall in Mirissa in January
Typically, you can expect about 5 days of rain this month, with 86 mm (3.4 in) on average. Showers tend to be short but heavy rather than persistent drizzle. When it rains, it usually means it, but it doesn't last long.
Temperature in Mirissa in January
If you're visiting Mirissa in January, expect highs of 30°C (86°F) and overnight lows around 24°C (75°F). Indoor breaks or shaded spots can make the warmer part of the day much more comfortable. Nights stay warm at around 24°C (75°F), so light bedding and good ventilation are worth thinking about.
Sunshine in Mirissa in January
The days are predominantly sunny, with an estimated total of around 250 hours of sunshine. These sun-filled days are perfect for playing sports, visiting parks, or going for a bike ride.Our weather planner can help you find worldwide destinations with pleasant weather during this period. July and August typically offer the best weather for Mirissa.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Sri Lanka, check out our Mirissa's climate page.
Mirissa Temperature in January
Min Temperature
24°C (75°F)
Max Temperature
30°C (86°F)
Chance of Rain
18%
Precipitation
86 mm (3.4 in)
Rainy days
5 days
Sunshine
250 hours *
Percentage Sunshine
*
Daily Historical Temperatures
47-year average (1976-2026)
Based on our historical records, temperatures in Mirissa typically stay consistent throughout January, with daily highs averaging around 30°C (86°F). Nights are warm, with lows around 23°C (73°F).
Average temperatures in January
Daily Historical Precipitation
47-year average (1976-2026)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in January
Historical weather for Mirissa in January
Browse day-by-day weather records for Mirissa spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Mirissa historical weather extremes in January
Based on weather observations in Mirissa between 2004 and 2025, these are the recorded extremes during January.
- On January 22, 2024, temperatures climbed to 33°C (91°F), marking the warmest January day on record.
- The coldest January day was on January 12, 2011, with a maximum of 25°C (77°F).
- Nighttime temperatures dropped to 12°C (54°F) on January 25, 2021, marking the coldest January night on record.
Best Places in Sri Lanka in January
Find out more about the weather in Sri Lanka and which places have the best travel conditions in this month. See all of Sri Lanka in January →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Mirissa in January
Warm weather calls for comfortable, breathable clothing in January. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). High rain levels are expected, so pack waterproof gear and an umbrella or poncho. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in Mirissa in January
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Sri Lanka, check out our Mirissa's climate page.
See the full Mirissa climate overview or explore weather in Sri Lanka.
