Xiyu Temperature by Month
Xiyu in Penghu County, Taiwan sees moderate seasonal temperature shifts, with daytime highs between 20°C (68°F) in January and 30°C (86°F) in July, averaging 25°C (77°F) annually. Explore the full monthly breakdown below.
Xiyu Monthly Temperatures
Seasonal changes in Xiyu bring a little variety without extreme temperature swings. Nighttime lows range from 27°C (81°F) in July to 17°C (63°F) in January.
The chart below illustrates the average maximum day and minimum night temperatures in Xiyu by month:
The coldest point of the day usually falls between 4 AM and 6 AM, with temperatures peaking around 3 PM. July, the city's warmest month, gets 262 hours of sunshine.
The chart below shows the average temperature throughout the year:
Daily Historical Temperatures
43-year average (1976-2025)
Average high and low temperatures for each day of the month based on long-term records.
Average temperatures in June
Historical Xiyu Temperatures: 1976-2026
Browse day-by-day temperature records for Xiyu spanning 51 years. Select any month and year to see actual high and low temperatures recorded on each day.
Temperature: Xiyu vs Taiwan
The map below shows the annual temperature across Taiwan. You can also select individual months if you want to compare a specific time of year.
very warm
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pleasant
moderate
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Xiyu vs World: Temperature Compared
Xiyu's average annual maximum temperature is 25°C (77°F). To put that in context, here's how it compares to a few well-known destinations:
Rome, Italy averages 20°C (68°F) annually, with reliably warm summers and comfortable winters.
Queenstown, New Zealand averages 10°C (50°F) annually — remember seasons are flipped, so its coldest months fall in June and July.
Shanghai, China averages 21°C (70°F) a year, with warm summers, mild winters, and a noticeable spring and autumn.
Perth, Australia averages 25°C (77°F) annually, with a classic Mediterranean climate — hot dry summers and mild wet winters.
What Does the Temperature Feel Like in Xiyu?
Temperature alone doesn't tell the whole story — humidity plays a big role in how warm or cold it actually feels. High humidity in summer makes the heat feel more intense, particularly once temperatures climb above 25°C. In winter, the same humidity can make cold air feel sharper than the thermometer suggests.
In Xiyu, January is the coolest month, with average highs of 20°C (68°F) and humidity around 79% — considered high. In July, the warmest month, temperatures average 30°C (86°F) with 85% humidity — conditions that feel very high. For a full picture, see our humidity page.
Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.
The readings come from a range of sources — land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.
Global average temperatures have risen by around 1.2°C since the pre-industrial era, and the effects are visible across many regions. Winters are milder on average, with fewer frost days and less snow in many parts of the world. Heatwaves are more frequent and more intense, and Europe's summers of 2018, 2019, and 2020 all set records.
Summers are also getting drier in some areas, while winter rainfall has increased in others. This contributies to higher river levels and more flooding. In many countries, spring arrives earlier and autumn lasts longer. It has knock-on effects for wildlife, agriculture, and local ecosystems.
For more on Xiyu's weather — including monthly rainfall, sunshine hours, and humidity — visit our Xiyu climate page.
