Climate averages 1991–2020
Dumai weather
in June.
A hot, wet month: one of the warmest and the 2nd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
June is a hot month in Dumai: daytime highs average 30.5°C and nights cool to about 24.2°C. By daytime temperature it is one of the warmest months of the year.
Expect about 156 mm of rain on roughly 21 days, which makes June a wet month (the 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 13 min on an average June day.
The nearest other city in this atlas is Port Dickson (103 km away). In June its highs average 29.5°C, 1.0°C cooler than Dumai, with 188 mm of rain.
Among the 200 cities listed in Indonesia, Dumai ranks joint 8th of 200 for the warmest June highs and 153rd of 200 for the driest June (rainfall, lowest first). The mean June high of those 200 cities is 29.0°C; Dumai is 1.5°C warmer than that mean.
From June to July, average highs fall by 0.2°C to 30.3°C, and monthly rainfall rises from 156 mm to 162 mm.
The annual picture
June 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
Dumai climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 28.9°C23.4°C | 23.4°C | 201 | 21.3 | 12.012 h |
| February | 29.7°C23.6°C | 23.6°C | 125 | 16.9 | 12.112 h |
| March | 30.2°C23.9°C | 23.9°C | 217 | 25.1 | 12.112 h |
| April | 30.3°C24.1°C | 24.1°C | 249 | 27.6 | 12.212 h |
| May | 30.5°C24.3°C | 24.3°C | 224 | 26.3 | 12.212 h |
| June, selected | 30.5°C24.2°C | 24.2°C | 156 | 21.2 | 12.212 h |
| July | 30.3°C23.9°C | 23.9°C | 162 | 20.4 | 12.212 h |
| August | 30.3°C23.8°C | 23.8°C | 195 | 24.0 | 12.212 h |
| September | 30.2°C23.6°C | 23.6°C | 253 | 26.1 | 12.112 h |
| October | 29.8°C23.6°C | 23.6°C | 308 | 28.2 | 12.112 h |
| November | 29.1°C23.4°C | 23.4°C | 387 | 28.5 | 12.012 h |
| December | 28.7°C23.4°C | 23.4°C | 343 | 27.7 | 12.012 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
June in nearby cities
- Port Dickson in JuneMalaysia · 103 kmHigh 29.5°C · Low 25.3°C · 188 mm rain
- Malacca in JuneMalaysia · 106 kmHigh 29.2°C · Low 25.6°C · 181 mm rain
- Sepang in JuneMalaysia · 119 kmHigh 29.4°C · Low 25.0°C · 145 mm rain
- Pekanbaru in JuneIndonesia · 128 kmHigh 30.3°C · Low 23.7°C · 131 mm rain
- Seremban in JuneMalaysia · 130 kmHigh 29.6°C · Low 24.1°C · 160 mm rain
- Muar in JuneMalaysia · 132 kmHigh 29.3°C · Low 25.4°C · 175 mm rain
- Cyberjaya in JuneMalaysia · 142 kmHigh 29.9°C · Low 23.8°C · 146 mm rain
- Puchong in JuneMalaysia · 149 kmHigh 30.2°C · Low 23.9°C · 97 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 Dumai) is explained once on the Dumai year overview and on the Sources, method and limits page.