Ainaro, Timor-Leste experiences average highs of 27°C (81°F) and lows of 21°C (70°F) throughout the year. Rainfall is frequent, averaging about 15 rainy days per month. Sunshine is abundant, averaging about 10 hours per day. High humidity combined with warm temperatures produces a tropical feel year-round. Average highs have cooled by 0.7°C (1.3°F) across the available records.
Ainaro, Timor-Leste Weather & Climate 2026
Monthly climate averages for Ainaro, Timor-Leste. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: May–Nov 
Wetter season: Jan–Dec At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
6.5/10
Best: June, July, August, September
UV Index
8
High
Temperature 27°C / 21°C
Feels Like 31°C / 24°C
Rainy Days 15
Rainfall 154 mm
Sunshine 10 h
Humidity 81%
Wind Speed 8 km/h
Dew Point 21°C
Hottest Month
30°C
October
Avg Low21°C
Rain6days
Coldest Month
19°C
August
Avg High27°C
Rain2days
Driest Month
2days
August
Avg High27°C
Avg Low19°C
Windiest Month
11 km/h
September (Gusts 37)
Worst Time to Visit
Consider avoiding January, February, March, December due to heavy rainfall, oppressive humidity.
Sun Position
Sunrise 06:52
Daylight 11.6h
Sunset 18:28
Live conditions—
Ainaro on the map · live conditions
Ainaro, Timor-Leste
- Continent
- Asia
- Country
- Timor-Leste
- City
- Ainaro
- Population
- 12K
- Coordinates
- -8.99°, 125.51°
Seasonal Breakdown
Spring
Sep–Nov
Avg High 29°C
Avg Low 21°C
Rain 8 days/mo
1/3 best months
Summer
Dec–Feb
Avg High 28°C
Avg Low 22°C
Rain 27 days/mo
Autumn
Mar–May
Avg High 27°C
Avg Low 21°C
Rain 19 days/mo
Winter
Jun–Aug
Avg High 26°C
Avg Low 19°C
Rain 7 days/mo
3/3 best months
Climate Charts
Based on historical averages (2016–2025)
Monthly Temperatures
HighLowShaded bands show the typical range across the available yearly records.
Line chart showing monthly temperatures. Jan: 27°C / 22°C . Feb: 27°C / 22°C . Mar: 27°C / 22°C . Apr: 27°C / 21°C . May: 26°C / 21°C . Jun: 26°C / 20°C . Jul: 26°C / 19°C . Aug: 27°C / 19°C . Sep: 29°C / 20°C . Oct: 30°C / 21°C . Nov: 30°C / 22°C . Dec: 28°C / 22°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 310 mm. Feb: 301 mm. Mar: 306 mm. Apr: 142 mm. May: 101 mm. Jun: 90 mm. Jul: 45 mm. Aug: 9 mm. Sep: 35 mm. Oct: 50 mm. Nov: 152 mm. Dec: 311 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 86%. Feb: 87%. Mar: 88%. Apr: 85%. May: 85%. Jun: 84%. Jul: 80%. Aug: 73%. Sep: 70%. Oct: 69%. Nov: 76%. Dec: 85%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 7 km/h . Feb: 7 km/h . Mar: 6 km/h . Apr: 7 km/h . May: 8 km/h . Jun: 9 km/h . Jul: 9 km/h . Aug: 10 km/h . Sep: 11 km/h . Oct: 10 km/h . Nov: 8 km/h . Dec: 6 km/h .
Sunshine
Sunshine
Sunshine: Jan: 10h. Feb: 10h. Mar: 10h. Apr: 10h. May: 10h. Jun: 10h. Jul: 10h. Aug: 11h. Sep: 11h. Oct: 11h. Nov: 11h. Dec: 10h.
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 8. Feb: UV 9. Mar: UV 8. Apr: UV 8. May: UV 6. Jun: UV 6. Jul: UV 7. Aug: UV 8. Sep: UV 9. Oct: UV 10. Nov: UV 9. Dec: UV 8.
Monthly Daylight Hours
Daylight12h reference
Monthly Dew Point & Comfort
Dew Point Dry Comfortable Humid Muggy Oppressive
Climate Trends
Average highs have cooled by 0.7°C (1.3°F) across the available records. Average rainfall is trending wetter by about 32 mm.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | Oct 2025 · 30°C | Oct · 30°C |
| Coldest month | Aug 2025 · 19°C | Aug · 19°C |
| Wettest month | Jan 2025 · 441 mm | Dec · 311 mm |
| Windiest month | Sep 2025 · 11 km/h | Sep · 11 km/h |
Month-by-Month Weather Table
January
Wet 
February
Wet March
Wet April
Fair May
Good June best
Excellent July best
Excellent August best
Excellent September best
Excellent October
Good November
Fair December
Wet | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 27°C / 22°C | 33°C / 26°C | 29days (310 mm) Wet | 9.5h Good | 86% Very Muggy | 8.2 Very High | Wet | View Details |
| February | 27°C / 22°C | 33°C / 26°C | 26days (301 mm) Wet | 9.8h Good | 87% Very Muggy | 8.9 Very High | Wet | View Details |
| March | 27°C / 22°C | 33°C / 26°C | 27days (306 mm) Wet | 9.7h Good | 88% Very Muggy | 8 Very High | Wet | View Details |
| April | 27°C / 21°C | 32°C / 25°C | 16days (142 mm) Wet | 10.2h Excellent | 85% Humid | 7.5 Very High | Fair | View Details |
| May | 26°C / 21°C | 30°C / 24°C | 15days (101 mm) Wet | 10.2h Excellent | 85% Humid | 6.4 High | Good | View Details |
| June best | 26°C / 20°C | 29°C / 23°C | 11days (90 mm) Wet | 10.2h Excellent | 84% Humid | 6.3 High | Excellent | View Details |
| July best | 26°C / 19°C | 28°C / 21°C | 8days (45 mm) Wet | 10.4h Excellent | 80% Humid | 6.5 High | Excellent | View Details |
| August best | 27°C / 19°C | 29°C / 21°C | 2days (9 mm) Excellent | 10.9h Excellent | 73% Muggy | 8.2 Very High | Excellent | View Details |
| September best | 29°C / 20°C | 31°C / 22°C | 4days (35 mm) Good | 11h Excellent | 70% Muggy | 9.2 Very High | Excellent | View Details |
| October | 30°C / 21°C | 33°C / 24°C | 6days (50 mm) Good | 11.2h Excellent | 69% Muggy | 9.7 Very High | Good | View Details |
| November | 30°C / 22°C | 34°C / 26°C | 15days (152 mm) Wet | 10.8h Excellent | 76% Humid | 9.2 Very High | Fair | View Details |
| December | 28°C / 22°C | 33°C / 26°C | 25days (311 mm) Wet | 9.5h Good | 85% Humid | 8 Very High | Wet | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Ainaro are June, July, August, September, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Ainaro, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Ainaro is October, with average daytime highs of 30°C (86°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Ainaro is August, with average overnight lows of 19°C (66°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Ainaro is December, averaging 311mm of precipitation across 25 rainy days. An umbrella or waterproof jacket is essential.
The rainy season in Ainaro runs through January, March, February, December, with the heaviest rainfall in January. Based on 10-year averages for Ainaro.
Ainaro receives approximately 123 sunshine hours per year. The sunniest month is October with around 11 hours. Based on climate data for Ainaro.
The least favorable months to visit Ainaro are January, February, March, December, primarily due to heavy rainfall, oppressive humidity. For the best conditions, consider June, July, August, September instead.
The annual average UV index in Ainaro is 8, classified as high. SPF 30+ sunscreen, sunglasses, and seeking shade between 10:00–16:00 are strongly recommended.
Average humidity in Ainaro is 81%, classified as humid. High humidity makes warm temperatures feel significantly hotter — lightweight, breathable clothing is recommended.
Average wind speeds in Ainaro are 8 km/h (5 mph). The windiest month is September with peak winds reaching 11 km/h (7 mph) (gusts up to 37 km/h / 23 mph).
Ainaro averages 2 clear-sky days per month with overall cloud cover around 68%. The clearest skies occur in September.
The annual average dew point in Ainaro is 21°C (70°F), which feels muggy and uncomfortable. Expect heavy perspiration during warmer months — stay hydrated and take breaks in air-conditioned spaces.
Ainaro has a Tropical Monsoon climate, classified as Am under the Köppen system. Tropical climates are warm year-round with high rainfall and temperatures rarely dropping below 18°C (64°F).
The 'feels like' temperature in Ainaro ranges from 24°C (75°F) to 31°C (88°F) on average. Humidity and radiant heat mean it often feels warmer than the thermometer reads, especially in summer months.
Yes, June is a great time to visit Ainaro. It earns a climate score of 8.5/10 with Excellent.
For June in Ainaro, pack Umbrella, Waterproof jacket, Breathable clothing, Sunscreen (SPF 30+), Sun hat. With average highs of 26°C (78°F) and 11 rainy days, these essentials will keep you comfortable.
Data Source
Climate data derived from ERA5 reanalysis (ECMWF), averaged over 2016–2025. Sea surface temperature from marine reanalysis data. Climate scores and seasonal estimates are computed by WorldStats.
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