Son, Thailand experiences average highs of 30°C (86°F) and lows of 26°C (79°F) throughout the year. Rainfall is frequent, averaging about 18 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.
Son, Thailand Weather & Climate 2026
Monthly climate averages for Son, Thailand. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: Jan–Dec 
Wetter season: May–Nov At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
3.9/10
Best: January, February, December
UV Index
8
High
Temperature 30°C / 26°C
Feels Like 35°C / 30°C
Rainy Days 18
Rainfall 175 mm
Sunshine 10 h
Humidity 80%
Wind Speed 20 km/h
Dew Point 24°C
Hottest Month
31°C
March
Avg Low 26°C
Rain 10 days
Coldest Month
25°C
January
Avg High 30°C
Rain 7 days
Driest Month
4 days
February
Avg High 31°C
Avg Low 26°C
Windiest Month
25 km/h
February (Gusts 35)
Sea Temperature
29°C – 32°C
Warmest water: May (
31.5°C
)
Worst Time to Visit
Consider avoiding April, May, June, August due to extreme heat, heavy rainfall, oppressive humidity.
Sun Position
Sunrise 06:07
Daylight 12.5h
Sunset 18:37
Live conditions —
Son on the map · live conditions
Son, Thailand
- Continent
- Asia
- Country
- Thailand
- City
- Son
- Population
- 947
- Coordinates
- 6.63°, 99.62°
Seasonal Breakdown
Spring
Mar–May
Avg High 31°C
Avg Low 26°C
Rain 19 days/mo
Summer
Jun–Aug
Avg High 29°C
Avg Low 26°C
Rain 21 days/mo
Autumn
Sep–Nov
Avg High 29°C
Avg Low 26°C
Rain 25 days/mo
Winter
Dec–Feb
Avg High 30°C
Avg Low 25°C
Rain 8 days/mo
3/3 best months
Climate Charts
Based on historical averages (2016–2025)
Monthly Temperatures
High Low Shaded bands show the typical range across the available yearly records.
Line chart showing monthly temperatures. Jan: 30°C / 25°C . Feb: 31°C / 26°C . Mar: 31°C / 26°C . Apr: 31°C / 27°C . May: 30°C / 27°C . Jun: 29°C / 26°C . Jul: 29°C / 26°C . Aug: 29°C / 26°C . Sep: 29°C / 26°C . Oct: 29°C / 26°C . Nov: 29°C / 25°C . Dec: 29°C / 25°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 50 mm. Feb: 22 mm. Mar: 43 mm. Apr: 137 mm. May: 253 mm. Jun: 184 mm. Jul: 179 mm. Aug: 259 mm. Sep: 294 mm. Oct: 281 mm. Nov: 290 mm. Dec: 113 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 76%. Feb: 71%. Mar: 73%. Apr: 79%. May: 82%. Jun: 81%. Jul: 81%. Aug: 81%. Sep: 83%. Oct: 83%. Nov: 84%. Dec: 80%.
Monthly Wind Speed
Wind Speed Gusts
Bar chart showing monthly wind speed. Jan: 24 km/h . Feb: 25 km/h . Mar: 21 km/h . Apr: 18 km/h . May: 17 km/h . Jun: 18 km/h . Jul: 18 km/h . Aug: 19 km/h . Sep: 21 km/h . Oct: 19 km/h . Nov: 19 km/h . Dec: 23 km/h .
Sunshine
Sunshine
Sunshine: Jan: 10h. Feb: 11h. Mar: 11h. Apr: 11h. May: 10h. Jun: 10h. Jul: 10h. Aug: 10h. Sep: 9h. Oct: 9h. Nov: 8h. Dec: 9h.
Sea Temperature
Sea Temperature
Line chart showing monthly sea temperature. Jan: 29°C . Feb: 29°C . Mar: 30°C . Apr: 31°C . May: 32°C . Jun: 31°C . Jul: 31°C . Aug: 31°C . Sep: 30°C . Oct: 30°C . Nov: 30°C . Dec: 29°C .
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 8. Feb: UV 9. Mar: UV 9. Apr: UV 9. May: UV 8. Jun: UV 7. Jul: UV 8. Aug: UV 8. Sep: UV 8. Oct: UV 8. Nov: UV 7. Dec: UV 7.
Monthly Daylight Hours
Daylight 12h 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 41 mm.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | Mar 2025 · 31°C | Mar · 31°C |
| Coldest month | Nov 2025 · 25°C | Jan · 25°C |
| Wettest month | Nov 2025 · 697 mm | Sep · 294 mm |
| Windiest month | Jan 2025 · 26 km/h | Feb · 25 km/h |
Month-by-Month Weather Table
January best
Good 
February best
Fair March
Poor April
Wet May
Wet June
Wet July
Wet August
Wet September
Wet October
Wet November
Wet December best
Fair | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January best | 30°C / 25°C | 34°C / 28°C | 7days (50 mm) Good | 10.1h Excellent | 76% Humid | 7.8 Very High | Good | View Details |
| February best | 31°C / 26°C | 36°C / 27°C | 4days (22 mm) Good | 10.7h Excellent | 71% Muggy | 8.7 Very High | Fair | View Details |
| March | 31°C / 26°C | 37°C / 29°C | 10days (43 mm) Wet | 10.8h Excellent | 73% Muggy | 9.2 Very High | Poor | View Details |
| April | 31°C / 27°C | 37°C / 31°C | 20days (137 mm) Wet | 10.5h Excellent | 79% Humid | 9 Very High | Wet | View Details |
| May | 30°C / 27°C | 36°C / 31°C | 26days (253 mm) Wet | 9.5h Good | 82% Humid | 7.8 Very High | Wet | View Details |
| June | 29°C / 26°C | 35°C / 31°C | 21days (184 mm) Wet | 9.7h Good | 81% Humid | 7.4 Very High | Wet | View Details |
| July | 29°C / 26°C | 35°C / 31°C | 19days (179 mm) Wet | 9.8h Good | 81% Humid | 7.5 Very High | Wet | View Details |
| August | 29°C / 26°C | 35°C / 30°C | 23days (259 mm) Wet | 9.6h Good | 81% Humid | 7.8 Very High | Wet | View Details |
| September | 29°C / 26°C | 34°C / 30°C | 23days (294 mm) Wet | 8.9h Good | 83% Humid | 7.5 Very High | Wet | View Details |
| October | 29°C / 26°C | 34°C / 30°C | 27days (281 mm) Wet | 8.7h Good | 83% Humid | 8 Very High | Wet | View Details |
| November | 29°C / 25°C | 34°C / 29°C | 26days (290 mm) Wet | 8.3h Good | 84% Humid | 6.7 High | Wet | View Details |
| December best | 29°C / 25°C | 33°C / 28°C | 13days (113 mm) Wet | 9.1h Good | 80% Humid | 7.3 Very High | Fair | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Son are January, February, December, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Son, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Son is March, with average daytime highs of 31°C (89°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Son is January, with average overnight lows of 25°C (78°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Son is September, averaging 294mm of precipitation across 23 rainy days. An umbrella or waterproof jacket is essential.
The rainy season in Son runs through October, May, November, August, with the heaviest rainfall in October. Based on 10-year averages for Son.
Son receives approximately 116 sunshine hours per year. The sunniest month is March with around 11 hours. Based on climate data for Son.
The least favorable months to visit Son are April, May, June, August, primarily due to extreme heat, heavy rainfall, oppressive humidity. For the best conditions, consider January, February, December instead.
The annual average UV index in Son is 8, classified as high. SPF 30+ sunscreen, sunglasses, and seeking shade between 10:00–16:00 are strongly recommended.
Average humidity in Son is 80%, classified as humid. Humidity levels are generally comfortable and should not affect outdoor activities for most people.
Yes — sea temperatures in January, February, March, April, May, June, July, August, September, October, November, December average 30°C (86°F), which is warm and comfortable for swimming and water activities.
Average wind speeds in Son are 20 km/h (12 mph). The windiest month is February with peak winds reaching 25 km/h (16 mph) (gusts up to 35 km/h / 22 mph).
Son averages 1 clear-sky days per month with overall cloud cover around 80%. The clearest skies occur in February.
The annual average dew point in Son is 24°C (75°F), which feels oppressively humid. Expect heavy perspiration during warmer months — stay hydrated and take breaks in air-conditioned spaces.
Son 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 Son ranges from 30°C (86°F) to 35°C (95°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 Son, with a climate score of 2.4/10. Consider visiting during January, February, December instead for better conditions.
For June in Son, pack Umbrella, Waterproof jacket, Waterproof shoes, Breathable clothing, Sunscreen (SPF 30+). With average highs of 29°C (85°F) and 21 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.
Last updated: