Weligama weather in September

September in Weligama: sweltering, soaked, with clean air — fine if you can take 27 rainy days.

Updated September 2026 · climate normals from ERA5 reanalysis

Weligama🇱🇰 Sri Lanka · Sri Lanka & the Maldives · Beach76
  1. 83Jan
  2. 89Feb
  3. 85Mar
  4. 79Apr
  5. 66May
  6. 77Jun
  7. 81Jul
  8. 80Aug
  9. 76Sep
  10. 70Oct
  11. 64Nov
  12. 78Dec

#9 of 12 months in Weligama · #837 of 1413 destinations to visit in September · comfort 76/100 (tier B)

Days
29°C
Nights
25°C
Wet days
27
Sun
10 h
Humidity
86%
Daylight
12 h
Weligama, Sri Lanka
Photo: Charith Kodagoda · Pexels

Traveller notes on Weligama in September

Notes from nearby Nuwara Eliya (117 km away)

Weligama doesn't have its own notes for September yet — these are about Nuwara Eliya, close enough to share the season.

Nuwara Eliya-forum threads on September weather describe this hill town as genuinely cool given its elevation, a real contrast to the lowland heat elsewhere, and posters are consistent this stretch of the year runs wetter, drizzly stints entirely possible across a multi-day stay. One visitor touring in the late-August-into-September window reported a couple of hours of light drizzle rather than a full washout, suggesting shorter showers rather than sustained downpours. Regulars call mid-September a reasonable sweet spot within the broader wet season, conditions gradually starting to balance out compared to the peak of the pattern. A proper jacket is standing advice regardless of forecast, evenings running genuinely chilly year round given the elevation. Posters call the tea country scenery and cooler climate worth the rain risk. The record: 19.5C days feeling like 19C, 13.4C nights, an extraordinarily high 166mm across 26 days and 84 percent humidity.
NuwaraEliyaSeptemberRegular · September · 1 month ago · about Nuwara Eliya · Read more on Tripadvisor ↗

Other months in Weligama

Sri Lanka's forum notes the southwest monsoon runs May through September, and while some posters described August days as sunny with just the odd late-afternoon shower, the bigger practical issue for Weligama and the rest of the south coast is the sea itself - monsoon swell makes the water genuinely unsafe for swimming outside a handful of reef-protected spots like Hikkaduwa and Unawatuna. Weligama specifically also gets a mention for having murkier water than neighboring beaches due to a nearby river mouth, regardless of season. Despite the rough seas, posters said the town stays lively as a secondary August high season.
SriLankaSouthCoastRegular · August · 1 month ago · Read more on Tripadvisor ↗
Forum posters name November through April as the dry season on this stretch of Sri Lanka's south coast, with February squarely inside it - sunny conditions and calm, clear seas are the norm, good for the area's famous beginner-friendly surf breaks. Posters describe Weligama itself as more of a surf town, while nearby Mirissa offers a reef-protected, calmer swimming option for anyone less interested in the waves - both Weligama and neighboring Ahangama and Midigama stay in surf season through April. Posters consistently recommend the area for beginner surf lessons specifically, with plenty of surf schools and instructors offering both group and one-on-one sessions.
Tripadvisor community · February · 1 month ago · Read more on Tripadvisor ↗

Add your own note from Weligama's card on the map.

Weligama climate normals — September

Daytime high29°C / 84°F🔥 sweltering
Nighttime low25°C / 77°F
Feels like (high)34°C / 93°F
Sea temperature29°C / 83°F♨️ bath-warm
Rainfall191 mm / 7.5 in⛈ soaked
Rainy days27 days
Humidity86%💦 very humid
Dew point25°C / 76°F
Sunshine10 h/day
Daylight12.1 h
Wind22 km/h / 14 mph
Air quality (US AQI)40🍃 good

Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.

Crowds in Weligama in September

How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.

BusyAugust break in Sri Lanka, school holidays in 3 of the markets that fill it(estimated)

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Peak crowdsBusyShoulder seasonQuiet

Best months for Weligama's weather

Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).

Fair weatherWeligama's weather peaks January–March, best around February.

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Best weatherFair weatherToughest weather

What's on in Weligama in September

Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.

  • Hazard

    Southwest monsoon rough seas

    1 May – 30 Sep

    From May through September the swell swings around and the south coast turns wet and stormy: surf schools close on the roughest days and whale-watching boats stop sailing entirely, with the reliable waves and calm seas shifting to Arugam Bay on the other coast. Source ↗

What's on around the world in September →

Nearby, and something's on

Within 300 km of Weligama — a day trip or a short hop — with something on this month. Never part of the comfort score.

Where is Weligama?

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Weligama in September — FAQ

Is September a good time to visit Weligama?
September in Weligama: sweltering, soaked, with clean air — fine if you can take 27 rainy days. It ranks #9 of 12 months for Weligama on SeasonMap's comfort score (76/100).
What is the weather like in Weligama in September?
In September, Weligama averages a daily high of 28.9°C and a low of 25°C, with about 191.4 mm of rain over roughly 26.5 rainy days.
What is the air quality in Weligama in September?
Weligama has a mean US Air Quality Index of about 40 in September.

Within 300 km: Sigiriya's The Gathering at Minneriya around 15 Jul – 30 Sep, and Colombo's East coast season around 1 May – 30 Sep.