Weather by month
Timor-Leste in September: Weather and What to Expect
Dry season · Best time to visit
Last verified: Climate normals from the national meteorological services; events from official sources
By David
Quick answer · as of October 2026
September is the driest and sunniest month in Dili, with about 5 mm of rain and nearly 10 hours of sun a day, and it is getting hotter, with highs near 32°C. Seas are calm, it is the end of the coffee harvest, and the Dili International Film Festival and Aileu Coffee Festival take place.
- Dili high / low
- 31.7°C / 21.6°C
- Rainfall (Dili)
- 5 mm
- Rainy days
- 1
- Sea temperature
- About 28°C
- Sunshine
- 9.6 hours a day
- Season
- Dry season
On this page
Weather in September
September in Dili averages highs of 31.7°C and lows of 21.6°C, with 5 mm of rain over about 1 rainy day. For comparison, the hottest month averages 32.7°C and the wettest, January, gets 175 mm. Dili is one of the driest places in the country; the mountains and the south coast get more rain, and above 1,000 metres nights are cool all year.
| Measure | September |
|---|---|
| Average high | 31.7°C |
| Average low | 21.6°C |
| Rainfall | 5.2 mm |
| Days with rain (1 mm or more) | 0.9 |
| Sunshine | 9.6 hours a day |
| Humidity | 67% |
| Sea temperature | About 28°C |
What September is good for
- Driest and sunniest month
- Diving and snorkelling
- Coffee festival in Aileu
- Dili International Film Festival
What to watch out for
- Heat on the coast
- Rain can start inland late in the month
Holidays and events in September
| Date | Event | Where |
|---|---|---|
| 24 September – 12 October (2026) | Dili International Film Festival | Dili |
| 27 September (2026) | Aileu Coffee Festival | Aileu |
See all public holidays and festivals.
What to pack
- Light, loose clothes that cover shoulders and knees, a hat and high-factor sunscreen.
- A warm layer for the mountains, where nights can be cold.
- Insect repellent: dengue occurs in Timor-Leste, most of all in the wet season.
See the full packing list and the best time to visit.
Frequently asked questions
Is September a good time to visit Timor-Leste?
Yes. September is one of the best months to visit Timor-Leste: it is dry, sunny and good for beaches, diving and road trips.
Does it rain in Timor-Leste in September?
Dili averages 5 mm of rain over about 1 rainy day in September. The mountains and the south coast are usually wetter than Dili.
How hot is Timor-Leste in September?
In Dili, average highs are 31.7°C and lows 21.6°C, with the sea at about 28°C. It is much cooler in the mountains, especially at night.
Sources
Official sites, operators and references we checked for this page.
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