Malaysia · 30-year monthly climate averages
Based on 30 years of climate data, the most comfortable months to visit Penang are January, February and December, when daytime temperatures are agreeable and rainfall is relatively low.
Penang sees its warmest weather in March, when daytime highs average around 33°C, and its coolest in October (around 31°C).
Annual precipitation totals roughly 2331mm — October is typically the wettest month (~337mm) and January the driest (~80mm).
A distinctly wetter period runs from March to December — worth planning around if you prefer dry days.
🟧 avg daytime high · 🟦 dashed: avg nighttime low · bars: monthly rainfall
Daily forecast highs vs the 30-year normal — last 61 days
Each bar is one day: orange above normal, blue below.
| Month | High / Low | Rainfall | Travel rating |
|---|---|---|---|
| January | 32° / 25°C | 80mm | 🤔 Fair |
| February | 32° / 25°C | 86mm | 🤔 Fair |
| March | 33° / 25°C | 146mm | 🤔 Fair |
| April | 32° / 25°C | 188mm | ⚠️ Challenging |
| May | 32° / 25°C | 229mm | ⚠️ Challenging |
| June | 32° / 25°C | 164mm | ⚠️ Challenging |
| July | 32° / 25°C | 190mm | ⚠️ Challenging |
| August | 31° / 25°C | 246mm | ⚠️ Challenging |
| September | 31° / 24°C | 316mm | ⚠️ Challenging |
| October | 31° / 24°C | 337mm | ⚠️ Challenging |
| November | 31° / 24°C | 233mm | ⚠️ Challenging |
| December | 31° / 25°C | 117mm | 🤔 Fair |
January in Penang is hot, with average daytime highs around 32°C (89°F) and nighttime lows near 25°C (76°F). Expect roughly 80mm of precipitation spread over about 7 rainy days, with a moderate amount of rain.
🎒 What to pack — breathable summer clothing · sunscreen, hat and sunglasses · refillable water bottle
February in Penang is hot, with average daytime highs around 32°C (90°F) and nighttime lows near 25°C (76°F). Expect roughly 86mm of precipitation spread over about 6 rainy days, with a moderate amount of rain.
🎒 What to pack — breathable summer clothing · sunscreen, hat and sunglasses · refillable water bottle
March in Penang is hot, with average daytime highs around 33°C (91°F) and nighttime lows near 25°C (77°F). Expect roughly 146mm of precipitation spread over about 10 rainy days, and this is one of the wetter months.
🎒 What to pack — breathable summer clothing · sunscreen, hat and sunglasses · refillable water bottle · compact umbrella or rain jacket
April in Penang is hot, with average daytime highs around 32°C (90°F) and nighttime lows near 25°C (77°F). Expect roughly 188mm of precipitation spread over about 14 rainy days, and this is one of the wetter months.
🎒 What to pack — breathable summer clothing · sunscreen, hat and sunglasses · refillable water bottle · compact umbrella or rain jacket
May in Penang is hot, with average daytime highs around 32°C (90°F) and nighttime lows near 25°C (78°F). Expect roughly 229mm of precipitation spread over about 13 rainy days, and heavy rainfall is common — this is peak wet season territory.
🎒 What to pack — breathable summer clothing · sunscreen, hat and sunglasses · refillable water bottle · compact umbrella or rain jacket
June in Penang is hot, with average daytime highs around 32°C (90°F) and nighttime lows near 25°C (77°F). Expect roughly 164mm of precipitation spread over about 10 rainy days, and this is one of the wetter months.
🎒 What to pack — breathable summer clothing · sunscreen, hat and sunglasses · refillable water bottle · compact umbrella or rain jacket
July in Penang is hot, with average daytime highs around 32°C (89°F) and nighttime lows near 25°C (77°F). Expect roughly 190mm of precipitation spread over about 10 rainy days, and this is one of the wetter months.
🎒 What to pack — breathable summer clothing · sunscreen, hat and sunglasses · refillable water bottle · compact umbrella or rain jacket
August in Penang is hot, with average daytime highs around 31°C (89°F) and nighttime lows near 25°C (76°F). Expect roughly 246mm of precipitation spread over about 13 rainy days, and heavy rainfall is common — this is peak wet season territory.
🎒 What to pack — breathable summer clothing · sunscreen, hat and sunglasses · refillable water bottle · compact umbrella or rain jacket
September in Penang is hot, with average daytime highs around 31°C (88°F) and nighttime lows near 24°C (76°F). Expect roughly 316mm of precipitation spread over about 16 rainy days, and heavy rainfall is common — this is peak wet season territory.
🎒 What to pack — breathable summer clothing · sunscreen, hat and sunglasses · refillable water bottle · compact umbrella or rain jacket
October in Penang is hot, with average daytime highs around 31°C (88°F) and nighttime lows near 24°C (76°F). Expect roughly 337mm of precipitation spread over about 18 rainy days, and heavy rainfall is common — this is peak wet season territory.
🎒 What to pack — breathable summer clothing · sunscreen, hat and sunglasses · refillable water bottle · compact umbrella or rain jacket
November in Penang is hot, with average daytime highs around 31°C (88°F) and nighttime lows near 24°C (76°F). Expect roughly 233mm of precipitation spread over about 16 rainy days, and heavy rainfall is common — this is peak wet season territory.
🎒 What to pack — breathable summer clothing · sunscreen, hat and sunglasses · refillable water bottle · compact umbrella or rain jacket
December in Penang is hot, with average daytime highs around 31°C (88°F) and nighttime lows near 25°C (76°F). Expect roughly 117mm of precipitation spread over about 11 rainy days, and this is one of the wetter months.
🎒 What to pack — breathable summer clothing · sunscreen, hat and sunglasses · refillable water bottle · compact umbrella or rain jacket