Weather in Tainan Today
Current temperature in Tainan: 26°C (79°F). Overcast. Today's high 30°C (86°F), low 24°C (75°F).
Today's Daylight Forecast
Moon & Islamic Calendar
Very high UV today. Limit sun exposure around midday. Apply SPF 30+ every 2 hours and seek shade.
5-Day Weather Forecast
Full 15-Day ForecastAtmospheric Details
Today vs Normal
The long-term average high for today is 29°C.
10 of the last 28 days with published data ran above normal.
That's a break from the pattern - today's forecast runs above normal even though the recent stretch mostly ran below.
Red = above normal, blue = at or below · last 12 days
Air Quality
Health effects can be immediately felt by sensitive groups. Healthy individuals may experience difficulty breathing and throat irritation with prolonged exposure. Limit outdoor activity.
Health & Activity Advice
UV index is 8 today — very high. Limit sun exposure around midday, apply SPF 30+ every two hours, and seek shade when possible.
Health effects can be immediately felt by sensitive groups. Healthy individuals may experience difficulty breathing and throat irritation with prolonged exposure. Limit outdoor activity.
Morning before 10 AM or evening after 4 PM is the more comfortable window for outdoor activity today.
High humidity (94%) combined with the heat means it will feel more uncomfortable than the air temperature alone suggests — stay hydrated if you're active outside.
Nearby Regional Outlook
Tainan Weather Radar
Live precipitation · Cloud cover · Wind
Frequently Asked Questions
What is the hottest month in Tainan?
The hottest month in Tainan is typically July, with daytime highs averaging around 31.2°C (88°F), based on 10 years of historical weather data. Overnight lows during this period average near 26°C (79°F).
What is the coldest month in Tainan?
The coldest month in Tainan is typically January, with overnight lows averaging around 14.2°C (58°F) and daytime highs near 22.8°C (73°F), based on 10 years of historical weather data.
When does the rainy season start in Tainan?
Tainan has a clearly defined rainy season running roughly from June to August, based on 10 years of historical rainfall data. August is typically the wettest month, averaging about 388 mm of rain. Outside this window, rainfall is much lighter for the rest of the year.
What's the best time of year to visit Tainan?
The best time to visit Tainan is typically December to February, when daytime highs average a comfortable 23.7°C (75°F). Rainfall during this window averages around 30 mm, well below the 388 mm seen in August, the wettest month. This is based on 10 years of historical weather data.
Is Tainan's air quality safe right now?
As of the latest reading, Tainan's air quality index (AQI) is 65, rated "Moderate", based on the nearest monitoring station. Air quality is acceptable, though unusually sensitive individuals may notice minor effects.