Heyuan Temperature by Month

The average annual maximum temperature in Heyuan, Guangdong, China is 27°C (81°F), with daytime highs ranging from 18°C (64°F) in January to 33°C (91°F) in July. This page covers monthly averages, day-night differences, and how Heyuan compares to cities worldwide.

With significant temperature fluctuations, Heyuan enjoys distinct seasons year-round. Nighttime lows range from 26°C (79°F) in July to 9°C (48°F) in January.

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

Low temperatures are most often recorded between 4 AM and 6 AM, while highs typically occur around 3 PM.

The chart below shows the average temperature throughout the year:

Heyuan's average annual maximum temperature is 27°C (81°F). To put that in context, here's how it compares to a few well-known destinations:

Lisbon, Portugal averages 21°C (70°F) annually, warm summers, mild winters, and rain mainly in the cooler months.

Reykjavík, Iceland averages 9°C (48°F) a year, mild summers by Icelandic standards, but cold winters and frequent wind.

San Francisco, USA averages 19°C (66°F) annually, but with little seasonal variation, summers are often cool and foggy, winters mild.

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

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 Heyuan this rarely lasts long on the ground.

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