Best Time to Visit Penang
The best time to visit Penang is January to February, when the average temperature is about 28°C and rainfall is low for Penang, at 62–93 mm a month.
Penang weather by month
The wettest month in Penang is October with 303 mm of rain, and the warmest is May at an average 29°C. The coolest is January at 28°C.
| Month | Average temperature | Rainfall | Verdict |
|---|---|---|---|
| January | 28°C / 82°F | 93 mm | Best |
| February | 28°C / 82°F | 62 mm | Best |
| March | 29°C / 83°F | 146 mm | Hot |
| April | 29°C / 84°F | 200 mm | Wet |
| May | 29°C / 84°F | 242 mm | Wet |
| June | 29°C / 84°F | 176 mm | Wet |
| July | 29°C / 83°F | 203 mm | Wet |
| August | 29°C / 83°F | 219 mm | Wet |
| September | 28°C / 83°F | 263 mm | Wet |
| October | 28°C / 82°F | 303 mm | Wet |
| November | 28°C / 82°F | 271 mm | Wet |
| December | 28°C / 82°F | 177 mm | Wet |
How we pick the best months
- Best: an average temperature of 15–28°C and low rainfall for Penang: under 150 mm, and no more than 252 mm, a quarter above Penang's median month (never set below 60 mm).
- If no month qualifies, we show the three driest months that average 10–30°C instead.
- Wet: 150 mm of rain or more. Rainy: more than 252 mm. Hot: 29°C or more on average. Cool: under 15°C. Cold: under 5°C.
Averages cover day and night, so afternoons are warmer than the figure shown. Weather is only one reason to pick a month: school holidays, festivals and prices matter too.
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Where these numbers come from
Monthly averages for January 2001 – December 2020 from the NASA POWER project, for the area around Penang International (PEN) at 5.30, 100.28. The model covers a grid about 50 km across, so a coastal or hilly spot can run a degree or two different. Retrieved 12 September 2026.
The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center (LaRC) Prediction of Worldwide Energy Resource (POWER) Project funded through the NASA Earth Science/Applied Science Program.