Asau, Samoa experiences average highs of 29°C (84°F) and lows of 25°C (77°F) throughout the year. Rainfall is frequent, averaging about 17 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 stayed broadly stable across the available records.
Asau, Samoa Weather & Climate 2026
Monthly climate averages for Asau, Samoa. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: May–Oct 
Wetter season: Jan–Dec At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
4.1/10
Best: July, August, September
UV Index
8
High
Temperature 29°C / 25°C
Feels Like 34°C / 29°C
Rainy Days 17
Rainfall 168 mm
Sunshine 10 h
Humidity 85%
Wind Speed 21 km/h
Dew Point 24°C
Hottest Month
29°C
March
Avg Low26°C
Rain23days
Coldest Month
25°C
August
Avg High28°C
Rain8days
Driest Month
7days
September
Avg High28°C
Avg Low25°C
Windiest Month
24 km/h
February (Gusts 35)
Sea Temperature
29°C – 30°C
Warmest water: April (
30.3°C
)
Worst Time to Visit
Consider avoiding January, March, November, December due to extreme heat, heavy rainfall, oppressive humidity.
Sun Position
Sunrise 06:52
Daylight 11.3h
Sunset 18:12
Live conditions—
Asau on the map · live conditions
Asau, Samoa
- Continent
- Oceania
- Country
- Samoa
- City
- Asau
- Population
- 6.6K
- Coordinates
- -13.52°, -172.64°
Seasonal Breakdown
Spring
Sep–Nov
Avg High 29°C
Avg Low 25°C
Rain 14 days/mo
1/3 best months
Summer
Dec–Feb
Avg High 29°C
Avg Low 25°C
Rain 24 days/mo
Autumn
Mar–May
Avg High 29°C
Avg Low 26°C
Rain 20 days/mo
Winter
Jun–Aug
Avg High 28°C
Avg Low 25°C
Rain 9 days/mo
2/3 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: 29°C / 26°C . Feb: 29°C / 25°C . Mar: 29°C / 26°C . Apr: 29°C / 26°C . May: 29°C / 26°C . Jun: 29°C / 26°C . Jul: 28°C / 25°C . Aug: 28°C / 25°C . Sep: 28°C / 25°C . Oct: 29°C / 25°C . Nov: 29°C / 25°C . Dec: 29°C / 25°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 352 mm. Feb: 483 mm. Mar: 126 mm. Apr: 172 mm. May: 115 mm. Jun: 50 mm. Jul: 76 mm. Aug: 49 mm. Sep: 32 mm. Oct: 102 mm. Nov: 166 mm. Dec: 289 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 86%. Feb: 88%. Mar: 84%. Apr: 86%. May: 86%. Jun: 84%. Jul: 84%. Aug: 83%. Sep: 83%. Oct: 85%. Nov: 85%. Dec: 86%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 21 km/h . Feb: 24 km/h . Mar: 16 km/h . Apr: 18 km/h . May: 20 km/h . Jun: 22 km/h . Jul: 23 km/h . Aug: 23 km/h . Sep: 22 km/h . Oct: 22 km/h . Nov: 18 km/h . Dec: 19 km/h .
Sunshine
Sunshine
Sunshine: Jan: 10h. Feb: 8h. Mar: 11h. Apr: 10h. May: 10h. Jun: 10h. Jul: 10h. Aug: 11h. Sep: 11h. Oct: 11h. Nov: 11h. Dec: 10h.
Sea Temperature
Sea Temperature
Line chart showing monthly sea temperature. Jan: 30°C . Feb: 30°C . Mar: 30°C . Apr: 30°C . May: 30°C . Jun: 29°C . Jul: 29°C . Aug: 29°C . Sep: 29°C . Oct: 29°C . Nov: 29°C . Dec: 30°C .
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 8. Feb: UV 7. Mar: UV 9. Apr: UV 8. May: UV 7. Jun: UV 6. Jul: UV 6. Aug: UV 7. Sep: UV 8. Oct: UV 9. Nov: UV 9. Dec: UV 9.
Monthly Daylight Hours
Daylight12h reference
Monthly Dew Point & Comfort
Dew Point Dry Comfortable Humid Muggy
Climate Trends
Average highs have stayed broadly stable across the available records. Average rainfall is trending wetter by about 63 mm.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | Mar 2025 · 29°C | Mar · 29°C |
| Coldest month | Sep 2025 · 25°C | Aug · 25°C |
| Wettest month | Feb 2025 · 656 mm | Feb · 483 mm |
| Windiest month | Feb 2025 · 26 km/h | Feb · 24 km/h |
Month-by-Month Weather Table
January
Wet 
February
Wet March
Wet April
Wet May
Poor June
Fair July best
Good August best
Good September best
Fair October
Poor November
Wet December
Wet | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 29°C / 26°C | 35°C / 29°C | 25days (352 mm) Wet | 9.8h Good | 86% Very Muggy | 8.3 Very High | Wet | View Details |
| February | 29°C / 25°C | 34°C / 29°C | 24days (483 mm) Wet | 8.2h Good | 88% Very Muggy | 7 High | Wet | View Details |
| March | 29°C / 26°C | 36°C / 30°C | 23days (126 mm) Wet | 10.5h Excellent | 84% Humid | 9 Very High | Wet | View Details |
| April | 29°C / 26°C | 36°C / 30°C | 21days (172 mm) Wet | 9.9h Good | 86% Very Muggy | 7.7 Very High | Wet | View Details |
| May | 29°C / 26°C | 34°C / 30°C | 16days (115 mm) Wet | 9.8h Good | 86% Very Muggy | 6.6 High | Poor | View Details |
| June | 29°C / 26°C | 33°C / 29°C | 11days (50 mm) Wet | 10.1h Excellent | 84% Humid | 6.1 High | Fair | View Details |
| July best | 28°C / 25°C | 32°C / 28°C | 9days (76 mm) Wet | 10.1h Excellent | 84% Humid | 6.4 High | Good | View Details |
| August best | 28°C / 25°C | 33°C / 28°C | 8days (49 mm) Wet | 10.6h Excellent | 83% Humid | 7.4 Very High | Good | View Details |
| September best | 28°C / 25°C | 34°C / 28°C | 7days (32 mm) Good | 10.9h Excellent | 83% Humid | 8.3 Very High | Fair | View Details |
| October | 29°C / 25°C | 34°C / 28°C | 15days (102 mm) Wet | 10.8h Excellent | 85% Humid | 8.6 Very High | Poor | View Details |
| November | 29°C / 25°C | 35°C / 29°C | 21days (166 mm) Wet | 10.6h Excellent | 85% Humid | 8.6 Very High | Wet | View Details |
| December | 29°C / 25°C | 35°C / 29°C | 23days (289 mm) Wet | 10.1h Excellent | 86% Very Muggy | 8.6 Very High | Wet | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Asau are July, August, September, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Asau, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Asau is March, with average daytime highs of 29°C (85°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Asau is August, with average overnight lows of 25°C (77°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Asau is February, averaging 483mm of precipitation across 24 rainy days. An umbrella or waterproof jacket is essential.
The rainy season in Asau runs through January, February, March, December, with the heaviest rainfall in January. Based on 10-year averages for Asau.
Asau receives approximately 121 sunshine hours per year. The sunniest month is September with around 11 hours. Based on climate data for Asau.
The least favorable months to visit Asau are January, March, November, December, primarily due to extreme heat, heavy rainfall, oppressive humidity. For the best conditions, consider July, August, September instead.
The annual average UV index in Asau is 8, classified as high. SPF 30+ sunscreen, sunglasses, and seeking shade between 10:00–16:00 are strongly recommended.
Average humidity in Asau is 85%, classified as humid. High humidity makes warm temperatures feel significantly hotter — lightweight, breathable clothing is recommended.
Yes — sea temperatures in January, February, March, April, May, June, July, August, September, October, November, December average 29°C (84°F), which is warm and comfortable for swimming and water activities.
Average wind speeds in Asau are 21 km/h (13 mph). The windiest month is February with peak winds reaching 24 km/h (15 mph) (gusts up to 35 km/h / 22 mph).
Asau averages 4 clear-sky days per month with overall cloud cover around 58%. The clearest skies occur in September.
The annual average dew point in Asau is 24°C (75°F), which feels oppressively humid. Expect heavy perspiration during warmer months — stay hydrated and take breaks in air-conditioned spaces.
Asau 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 Asau ranges from 29°C (84°F) to 34°C (93°F) on average. Humidity and radiant heat mean it often feels warmer than the thermometer reads, especially in summer months.
June is not the best time to visit Asau, with a climate score of 5.7/10. Consider visiting during July, August, September instead for better conditions.
For June in Asau, pack Umbrella, Waterproof jacket, Breathable clothing, Sunscreen (SPF 30+), Sun hat. With average highs of 29°C (83°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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