Quick answer
Galle is driest roughly from December to April, with January to March the most reliable months for the fort and the nearby bays at Unawatuna and Jungle Beach. From about late May to September the southwest monsoon brings showers and rough seas, and October and November bring heavy afternoon storms. Galle receives roughly 2,300 to 2,500 mm of rain a year, with highs of about 29 to 31 °C all year. The fort is enjoyable in any month; the beaches are a dry-season pleasure.
Key takeaways
- Galle is driest roughly from December to April, with January to March the most reliable.
- The southwest monsoon brings showers and rough seas from roughly late May to September.
- May and October are usually the wettest months.
- Galle Fort is enjoyable in every season; the beaches nearby are best from December to April.
- Daytime temperatures stay around 29 to 31 °C all year.
Galle's climate in brief
Galle sits at the southwest corner of the island, fully exposed to the southwest monsoon. It receives roughly 2,300 to 2,500 mm of rain a year, more than the eastern end of the south coast. The wettest months are usually May and October, and the driest January to March.
Temperatures are steady: about 29 to 31 °C by day and 24 to 26 °C at night. The sea is about 27 to 29 °C. Humidity is high all year, highest in April and the monsoon months.
Inside the fort, the ramparts catch a sea breeze, and the stone streets dry quickly after rain.
- →Annual rain: roughly 2,300 to 2,500 mm.
- →Wettest: May and October.
- →Driest: January to March.
December to April
From December, Galle settles into its dry season. December still has some storms early in the month, but January to March bring long sunny spells, light winds and a calm sea. The bays at Unawatuna, Jungle Beach and Dalawella are swimmable, and the sunset from the ramparts is clear most evenings.
April is the hottest and most humid month, with afternoon storms but a mostly calm sea. The Galle Literary Festival and many events cluster in January and February, which are also the busiest months.
Evenings in the dry season are the best part of a Galle day. The heat eases after about 4.30 pm, the light turns gold on the ramparts and the lighthouse, and the walk from the Clock Tower to Flag Rock fills with families and cricket games. Most dinners can be eaten outdoors from January to March.
- →Driest: January to March.
- →Calm bays: roughly December to April.
- →Busiest: January and February.
Late May to September
The southwest monsoon reaches Galle in the second half of May. Late May and June are the wettest weeks, with roughly 250 to 350 mm in May. July and August are lighter, often with long sunny spells, and September brings afternoon storms.
The sea around the fort and on the nearby bays is rough, with waves crashing on the rampart rocks and red flags on most beaches. Unawatuna's bay is partly sheltered but still has currents on many days.
The fort is at its most atmospheric in the monsoon, with dramatic seas and empty streets. Its museums, cafes, galleries and shops provide shelter during showers, and hotel rates fall.
- →Sea: rough, red flags.
- →Fort: quiet and atmospheric.
- →Lower hotel rates.
October and November
October is often Galle's wettest month, with roughly 300 to 380 mm, falling mostly in heavy afternoon and evening storms. November follows, with storms easing in the second half. Mornings are usually dry, and walks around the ramparts are best done early.
The sea calms gradually, and by late November the bays are swimmable again on most days.
- →October: often the wettest month.
- →Late November: dry season starting.
- →Mornings: best for walks.
Planning a Galle stay by season
For a combined fort and beach stay, plan December to April. For the fort alone, any month works, with the monsoon offering quieter streets and lower prices. Start walks early in the wet months and keep cafes and museums for the afternoon.
Lankan Stays & Trails includes Galle in routes in every season, with beach time nearby from December to April and a fort-focused stay in the monsoon months.
Frequently asked questions
When is the best time to visit Galle?
For the fort and the nearby beaches together, roughly December to April, with January to March the most reliable. For the fort alone, any month works, and the monsoon months bring quieter streets and lower hotel rates.
What is the rainy season in Galle?
Galle's main rainy season is the southwest monsoon, from roughly late May to September, wettest in late May and June. October and November bring heavy afternoon storms, and October is often the wettest month. The dry season runs roughly from December to April.
Is Galle Fort worth visiting in the rain?
Yes. The fort's museums, churches, cafes, galleries and shops provide shelter, the stone streets dry quickly after showers, and the rough monsoon sea against the ramparts is dramatic. Walk the ramparts in the morning, when rain is less likely in the storm months.
Can you swim near Galle in June?
Generally not on open beaches. The southwest monsoon brings rough seas and strong currents to Galle's beaches from late May to September. Unawatuna's bay is partly sheltered but still has currents on many days. Follow flags and local advice.
What is the weather like in Galle in December?
December starts with some storms and dries out through the month. By the second half, most days are sunny with a calm sea, and the beaches at Unawatuna and Jungle Beach are swimmable. Christmas and New Year are busy, so book early.
How hot is Galle?
Daytime highs are about 29 to 31 °C all year, with nights of about 24 to 26 °C. April is the hottest and most humid month. A sea breeze on the ramparts makes the fort more comfortable in the late afternoon.
How does Lankan Stays & Trails plan Galle by season?
Galle is included in routes in every season. From December to April, a stay combines the fort with beach time at Unawatuna or Jungle Beach. In the monsoon months, the stay focuses on the fort, with morning walks and beach time moved to the east coast.
When is the wettest month in Galle?
May and October are usually Galle's wettest months, each with roughly 250 to 380 mm of rain. May's rain comes with the southwest monsoon onset, and October's from heavy afternoon storms in the second inter-monsoon. January to March are usually the driest months of the year.