Jian Temperature by Month

Jian in Hualien County, Taiwan sees significant seasonal temperature differences, with daytime highs between 17°C (63°F) in January and 29°C (84°F) in July, averaging 23°C (73°F) annually. Explore the full monthly breakdown below.

In Jian, temperatures can shift dramatically between warm in summer and mild in winter. Nights follow the same pattern, with lows ranging from 22°C (72°F) in July to 12°C (54°F) in January.

The chart below illustrates the average maximum day and minimum night temperatures in Jian by month:

Temperatures tend to bottom out between 4 AM and 6 AM, then climb to their daily peak around 3 PM. July, the warmest month, sees 255 hours of sunshine.

The chart below shows the average temperature throughout the year:

Jian's average annual maximum temperature is 23°C (73°F). To put that in context, here's how it compares to a few well-known destinations:

Athens, Greece sits at 23°C (73°F) on average, with hot dry summers and mild winters characteristic of the Mediterranean.

On the cooler end, Oslo, Norway averages just 10°C (50°F) annually, with pleasant summers but long, cold winters.

Buenos Aires, Argentina averages 23°C (73°F) a year, with hot summers and mild winters, and seasons reversed compared to Europe.

Melbourne, Australia averages 20°C (68°F) annually, known for unpredictable weather, with four seasons sometimes happening in one day.

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 Jian, January is the coolest month, with average highs of 17°C (63°F) and humidity around 75%, considered high. In July, the warmest month, temperatures average 29°C (84°F) with 77% humidity, conditions that feel 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.

Seasonal temperature shifts influence more than just how warm it feels, they also drive changes in rainfall, cloud cover, and wind patterns throughout the year.

Warmer air holds more moisture, which tends to mean heavier or more frequent rain during the warmer months. When temperatures drop in winter, any precipitation that does fall is more likely to come as snow or sleet, though in Jian this rarely lasts long on the ground.

For more on Jian's weather, including monthly rainfall, sunshine hours, and humidity, visit our Jian climate page.