Sanxia, Taiwan experiences average highs of 25°C (77°F) and lows of 20°C (68°F) throughout the year. Rainfall is moderate, averaging about 12 rainy days per month. Average highs have stayed broadly stable across the available records.
Sanxia, Taiwan Weather & Climate 2026
Monthly climate averages for Sanxia, Taiwan. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: Jan–Nov 
Wetter season: May–Dec At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
6.2/10
Best: March, April, October, November, December
UV Index
6
High
Temperature 25°C / 20°C
Feels Like 27°C / 21°C
Rainy Days 12
Rainfall 114 mm
Sunshine 8 h
Humidity 82%
Wind Speed 20 km/h
Dew Point 19°C
Hottest Month
31°C
July
Avg Low26°C
Rain11days
Coldest Month
13°C
January
Avg High18°C
Rain12days
Driest Month
10days
February
Avg High18°C
Avg Low13°C
Windiest Month
26 km/h
December (Gusts 49)
Worst Time to Visit
Consider avoiding July, August due to extreme heat, frequent rain, oppressive humidity.
Sun Position
Sunrise 05:06
Daylight 13.7h
Sunset 18:46
Live conditions—
Sanxia on the map · live conditions
Sanxia, Taiwan
- Continent
- Asia
- Country
- Taiwan
- City
- Sanxia
- Population
- 115.2K
- Coordinates
- 24.93°, 121.37°
Seasonal Breakdown
Spring
Mar–May
Avg High 24°C
Avg Low 18°C
Rain 12 days/mo
2/3 best months
Summer
Jun–Aug
Avg High 31°C
Avg Low 25°C
Rain 13 days/mo
Autumn
Sep–Nov
Avg High 26°C
Avg Low 22°C
Rain 12 days/mo
2/3 best months
Winter
Dec–Feb
Avg High 18°C
Avg Low 14°C
Rain 12 days/mo
1/3 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: 18°C / 13°C . Feb: 18°C / 13°C . Mar: 21°C / 15°C . Apr: 25°C / 18°C . May: 27°C / 22°C . Jun: 30°C / 25°C . Jul: 31°C / 26°C . Aug: 31°C / 25°C . Sep: 29°C / 24°C . Oct: 26°C / 22°C . Nov: 23°C / 19°C . Dec: 19°C / 15°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 67 mm. Feb: 73 mm. Mar: 101 mm. Apr: 105 mm. May: 147 mm. Jun: 142 mm. Jul: 150 mm. Aug: 134 mm. Sep: 173 mm. Oct: 144 mm. Nov: 61 mm. Dec: 65 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 82%. Feb: 82%. Mar: 82%. Apr: 82%. May: 83%. Jun: 83%. Jul: 80%. Aug: 83%. Sep: 83%. Oct: 83%. Nov: 83%. Dec: 83%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 23 km/h . Feb: 22 km/h . Mar: 20 km/h . Apr: 19 km/h . May: 18 km/h . Jun: 18 km/h . Jul: 18 km/h . Aug: 16 km/h . Sep: 18 km/h . Oct: 26 km/h . Nov: 25 km/h . Dec: 26 km/h .
Sunshine
Sunshine
Sunshine: Jan: 6h. Feb: 6h. Mar: 8h. Apr: 9h. May: 9h. Jun: 9h. Jul: 11h. Aug: 10h. Sep: 10h. Oct: 8h. Nov: 7h. Dec: 5h.
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 4. Feb: UV 5. Mar: UV 6. Apr: UV 7. May: UV 7. Jun: UV 7. Jul: UV 8. Aug: UV 8. Sep: UV 8. Oct: UV 5. Nov: UV 4. Dec: UV 3.
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 has remained broadly steady.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | Sep 2025 · 31°C | Jul · 31°C |
| Coldest month | Jan 2025 · 12°C | Jan · 13°C |
| Wettest month | Jul 2025 · 382 mm | Sep · 173 mm |
| Windiest month | Nov 2025 · 27 km/h | Dec · 26 km/h |
Month-by-Month Weather Table
January
Good 
February
Good March best
Excellent April best
Excellent May
Good June
Poor July
Poor August
Poor September
Fair October best
Excellent November best
Excellent December best
Good | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 18°C / 13°C | 16°C / 11°C | 12days (67 mm) Wet | 6.2h Fair | 82% Humid | 4 Moderate | Good | View Details |
| February | 18°C / 13°C | 17°C / 11°C | 10days (73 mm) Wet | 6.1h Fair | 82% Humid | 4.7 Moderate | Good | View Details |
| March best | 21°C / 15°C | 22°C / 14°C | 12days (101 mm) Wet | 7.9h Good | 82% Humid | 5.7 High | Excellent | View Details |
| April best | 25°C / 18°C | 27°C / 19°C | 11days (105 mm) Wet | 9h Good | 82% Humid | 6.7 High | Excellent | View Details |
| May | 27°C / 22°C | 31°C / 25°C | 13days (147 mm) Wet | 8.7h Good | 83% Humid | 6.7 High | Good | View Details |
| June | 30°C / 25°C | 35°C / 29°C | 12days (142 mm) Wet | 9.3h Good | 83% Humid | 7.2 Very High | Poor | View Details |
| July | 31°C / 26°C | 37°C / 30°C | 11days (150 mm) Wet | 10.7h Excellent | 80% Humid | 7.5 Very High | Poor | View Details |
| August | 31°C / 25°C | 37°C / 30°C | 15days (134 mm) Wet | 10.4h Excellent | 83% Humid | 8.1 Very High | Poor | View Details |
| September | 29°C / 24°C | 34°C / 28°C | 13days (173 mm) Wet | 9.5h Good | 83% Humid | 7.6 Very High | Fair | View Details |
| October best | 26°C / 22°C | 28°C / 23°C | 12days (144 mm) Wet | 7.8h Good | 83% Humid | 4.9 Moderate | Excellent | View Details |
| November best | 23°C / 19°C | 23°C / 19°C | 10days (61 mm) Wet | 6.6h Fair | 83% Humid | 3.8 Moderate | Excellent | View Details |
| December best | 19°C / 15°C | 18°C / 13°C | 14days (65 mm) Wet | 5.3h Fair | 83% Humid | 3.2 Moderate | Good | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Sanxia are March, April, October, November, December, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Sanxia, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Sanxia is July, 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 Sanxia is January, with average overnight lows of 13°C (56°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Sanxia is September, averaging 173mm of precipitation across 13 rainy days. An umbrella or waterproof jacket is essential.
The rainy season in Sanxia runs through August, December, May, September, with the heaviest rainfall in August. Based on 10-year averages for Sanxia.
Sanxia receives approximately 98 sunshine hours per year. The sunniest month is July with around 11 hours. Based on climate data for Sanxia.
The least favorable months to visit Sanxia are July, August, primarily due to extreme heat, frequent rain, oppressive humidity. For the best conditions, consider March, April, October, November, December instead.
The annual average UV index in Sanxia is 6, classified as high. Standard sun protection (sunscreen, hat) is recommended during prolonged outdoor exposure.
Average humidity in Sanxia is 82%, classified as humid. High humidity makes warm temperatures feel significantly hotter — lightweight, breathable clothing is recommended.
Average wind speeds in Sanxia are 20 km/h (12 mph). The windiest month is December with peak winds reaching 26 km/h (16 mph) (gusts up to 49 km/h / 31 mph).
Sanxia averages 4 clear-sky days per month with overall cloud cover around 64%. The clearest skies occur in October.
The annual average dew point in Sanxia is 19°C (66°F), which feels noticeably humid. Summer months may feel slightly sticky, but conditions remain manageable for most people.
Sanxia has a Humid Subtropical climate, classified as Cfa under the Köppen system. Temperate climates have mild winters and warm summers, with rainfall spread across the year and four distinct seasons.
The 'feels like' temperature in Sanxia ranges from 21°C (70°F) to 27°C (81°F) on average. The 'feels like' temperature closely matches the actual temperature throughout most of the year.
June is not the best time to visit Sanxia, with a climate score of 4/10. Consider visiting during March, April, October, November, December instead for better conditions.
For June in Sanxia, pack Umbrella, Waterproof jacket, Breathable clothing, Sunscreen (SPF 30+), Sun hat. With average highs of 30°C (86°F) and 12 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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