Sanyi Weather & Climate: Best Time to Visit

Average temperatures, rainfall, sunshine and the best time to visit Sanyi.

Climate overview of Sanyi

The climate in Sanyi, Miaoli County, Taiwan, is marked by large temperature swings across the seasons, ranging from 31°C (88°F) in July to 20°C (68°F) in January.

With around 2071 mm (82 in) of annual rainfall, Sanyi has a notably wet climate. However, this rainfall is not evenly distributed, the city has a distinct rainy season from May to September, with very warm summers and pleasant winters. The wettest month is August. The sunniest month is July, with 7.0 hours of sunshine per day on average.

Sanyi Weather by Month

Pick a month to see the average temperature, rainfall and sunshine in Sanyi - and find the best time to visit.

Monthly Temperature in Sanyi

In Sanyi, temperatures differ significantly between summer and winter months. Average daytime temperatures reach a very warm 31°C (88°F) in July. In January, the coolest month of the year, temperatures drop to a pleasant 20°C (68°F).

At night, temperatures range from around 25°C (77°F) in July to 13°C (55°F) in January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Rainfall in Sanyi

Sanyi experiences significant rainfall throughout the year, averaging 2071 mm (82 in) of precipitation annually. Sanyi can be quite wet during August, receiving approximately 385 mm (15 in) of precipitation over 16 rainy days.

In contrast, during the driest month (November), you will experience much drier conditions, with 53 mm (2.1 in) of precipitation spread across 14 rainy days. For more details, please visit our Sanyi Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

Sunshine Hours in Sanyi

Sanyi experiences moderate variation in sunshine hours across the seasons. With 7.0 hours daily sunshine in July, it dips to 4.5 hours in February, offering a balanced mix of sunny and overcast days.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Data from: Taichung, Taiwan (31 KM, 19 Miles).

Daily hours of sunshine

Data from: Taichung, Taiwan (31 KM, 19 Miles).

Humidity in Sanyi by Month

Best Time to Visit Sanyi

Conditions in Sanyi are generally most comfortable in January, October, November and December. They are typically least comfortable in June, July, August and September.

Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.

  • Best overall: January, October, November and December
  • Warmest weather: June, July, August and September
  • Most sunshine: July and October
  • Wettest months: May, June, July, August and September, when rainfall is highest.
  • Seasonal pattern: A distinct rainy season from May to September, with very warm summers and pleasant winters

Frequently asked questions about the climate in Sanyi

What is the best time to visit Sanyi?

January, October, November and December typically offer the most optimal weather in Sanyi. In contrast, June, July, August and September tend to have less optimal conditions. Sanyi has a distinct rainy season from May to September, with very warm summers and pleasant winters.

What temperatures can I expect in Sanyi?

Daytime highs range from 20°C (68°F) in January to 31°C (88°F) in July. Nighttime lows range from 13°C (55°F) to 25°C (77°F). Temperatures vary considerably through the year.

How much rain does Sanyi get?

Annual rainfall is around 2071 mm (82 in). August is the wettest month with 385 mm (15 in), while November is the driest with 53 mm (2.1 in).

How sunny is Sanyi?

Sanyi receives around 2,078 hours of sunshine per year. July is the sunniest month with 210 hours, while February is the cloudiest with just 134 hours. Overall, Sanyi enjoys abundant sunshine.

Sanyi 3-Day Forecast

Sanyi on the map

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