Climate averages 1991–2020
Tuen Mun weather
in May.
A hot, very wet month: the 5th warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a hot month in Tuen Mun: daytime highs average 28.5°C and nights cool to about 23.8°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 229 mm of rain on roughly 19 days, which makes May a very wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 12 min on an average May day.
The nearest other city in this atlas is San Tung Chung Hang (13 km away). In May its highs average 27.9°C, 0.6°C cooler than Tuen Mun, with 209 mm of rain.
Among the 6 cities listed in Hong Kong, Tuen Mun ranks 1st of 6 for the warmest May highs and joint 4th of 6 for the driest May (rainfall, lowest first). The mean May high of those 6 cities is 28.0°C; Tuen Mun is 0.5°C warmer than that mean.
From May to June, average highs rise by 1.2°C to 29.7°C, and monthly rainfall rises from 229 mm to 319 mm.
The annual picture
May in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Tuen Mun climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 19.2°C12.9°C | 12.9°C | 32 | 5.5 | 10.911 h |
| February | 20.5°C14.6°C | 14.6°C | 44 | 7.9 | 11.411 h |
| March | 23.2°C17.4°C | 17.4°C | 75 | 11.4 | 12.012 h |
| April | 26.2°C20.8°C | 20.8°C | 125 | 13.8 | 12.713 h |
| May, selected | 28.5°C23.8°C | 23.8°C | 229 | 19.1 | 13.213 h |
| June | 29.7°C25.8°C | 25.8°C | 319 | 22.9 | 13.513 h |
| July | 30.4°C26.2°C | 26.2°C | 243 | 22.1 | 13.413 h |
| August | 30.4°C26.0°C | 26.0°C | 313 | 23.6 | 12.913 h |
| September | 29.7°C24.9°C | 24.9°C | 199 | 16.6 | 12.312 h |
| October | 27.7°C22.3°C | 22.3°C | 61 | 6.7 | 11.612 h |
| November | 24.6°C18.6°C | 18.6°C | 34 | 4.9 | 11.111 h |
| December | 20.4°C14.1°C | 14.1°C | 31 | 4.2 | 10.811 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
May in nearby cities
- San Tung Chung Hang in MayHong Kong · 13 kmHigh 27.9°C · Low 24.1°C · 209 mm rain
- Kwai Chung in MayHong Kong · 17 kmHigh 28.0°C · Low 23.5°C · 210 mm rain
- Shenzhen in MayChina · 20 kmHigh 28.8°C · Low 23.9°C · 229 mm rain
- Tai Po in MayHong Kong · 21 kmHigh 28.4°C · Low 23.9°C · 229 mm rain
- Bao'an Centre in MayChina · 22 kmHigh 28.3°C · Low 23.8°C · 229 mm rain
- Sha Tin in MayHong Kong · 22 kmHigh 27.5°C · Low 23.5°C · 229 mm rain
- Hong Kong in MayHong Kong · 24 kmHigh 27.6°C · Low 23.8°C · 210 mm rain
- Tantou in MayChina · 42 kmHigh 28.6°C · Low 23.6°C · 258 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Tuen Mun) is explained once on the Tuen Mun year overview and on the Sources, method and limits page.
Shenzhen and Bao'an Centre lie in the same rainfall cell, so their rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.