Guishan Weather & Climate: Best Time to Visit

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

Climate overview of Guishan

Guishan, Taoyuan Municipality, Taiwan, sees big temperature differences between seasons, with July peaking at 33°C (91°F) and January dropping to 19°C (66°F).

With around 1843 mm (73 in) of annual rainfall, Guishan has a notably wet climate. However, this rainfall is not evenly distributed — the city has a distinct rainy season from May to September. The wettest month is August. The most sunshine falls in August, with an average of 6.3 hours of daily sunshine.

Guishan Weather by Month

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

Monthly Temperature in Guishan

Visitors to Guishan can expect significant temperature changes throughout the year. Average daytime temperatures reach a very warm 33°C (91°F) in July. In January, the coolest month of the year, temperatures drop to a pleasant 19°C (66°F).

At night, temperatures range from around 26°C (79°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 Guishan

Guishan is known for its substantial rainfall, with annual precipitation reaching 1843 mm (73 in). Guishan can be quite wet during August, receiving approximately 267 mm (11 in) of precipitation over 17 rainy days.

In contrast, during the driest month (January), you will experience much drier conditions, with 88 mm (3.5 in) of precipitation spread across 18 rainy days days. For more details, please visit our Guishan Precipitation page.

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

Sunshine Hours in Guishan

Guishan can be enjoyed more throughout the sunniest month of August under a blue sky, with approximately 6.3 hours of sunshine daily. In contrast, the city experiences much darker days in January, with only 2.5 hours of sunlight per day.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Data from: Taipei, Taiwan (15 KM, 9 Miles).

Daily hours of sunshine

Data from: Taipei, Taiwan (15 KM, 9 Miles).

Humidity in Guishan by Month

Best Time to Visit Guishan

During January, February, March, April, November and December, Guishan experiences its most favorable weather, with temperatures between 19°C (66°F) and 25°C (78°F). These mild conditions make it an excellent time for a visit.

The weather does bring rainfall during this period, between 88 mm (3.5 in) and 129 mm (5.1 in).

Plan accordingly for May, June, July, August, September and October, when conditions bring the heaviest precipitation.

Planning your next adventure but unsure where to go? Our climate tool suggests perfect locations tailored to your preferred weather conditions. Discover your ideal travel destination with our weather planner.

Frequently asked questions about the climate in Guishan

What is the best time to visit Guishan?

December typically offers the most optimal weather in Guishan. In contrast, June, July, August and September tend to have less optimal conditions. Guishan has a distinct rainy season from May to September.

What temperatures can I expect in Guishan?

Daytime highs range from 19°C (66°F) in January to 33°C (91°F) in July. Nighttime lows range from 13°C (55°F) to 26°C (79°F). Temperatures vary considerably through the year.

How much rain does Guishan get?

Annual rainfall is around 1843 mm (73 in). August is the wettest month with 267 mm (11 in), while January is the driest with 88 mm (3.5 in).

How sunny is Guishan?

Guishan receives around 1,404 hours of sunshine per year. August is the sunniest month with 188 hours, while January is the cloudiest with just 76 hours.

Guishan 3-Day Forecast

Guishan 3-Day Forecast

Guishan on the map

Guishan is highlighted — select any city to see its climate.

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