Malaysia
Penang in January: weather, sea & travel advice
This month's data profile
Rain shapes the decision
Penang in January is climatically well suited to beach holidays. The average daily high is around 29 °C, and the sea is about 29 °C. With about 15 rainy days it is very wet.
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Rank among 12 monthly averages
62/100 · #2
Warmth
#5
Dryness
#2
Sun
#5
Sea warmth
#12
Published best categories: Overall, Beach, City break, Family
Penang · JanuaryPhoto: Supanut Arunoprayote · CC BY 4.0Climate facts
- Average high
- 29 °C
- Average low
- 22 °C
- Sea
- 29 °C
- Rainy days (est.)
- 15 rainy days (est.)
- Sun (est.)
- 6 h/day
- Humidity
- 84 %
Climate evidence with direct month comparison
The highlighted row is the selected month. Precipitation total and rainy days are separate monthly averages.
| Month | Avg high °C | Avg low °C | Rainy days (est.) | Precipitation mm | Sun h/day (est.) | Humidity % | Wind m/s | Sea °C | Score |
|---|---|---|---|---|---|---|---|---|---|
| December | 29 | 23 | 24 | 219 | 5.7 | 86 | 1.3 | 29 | 55 |
| January (selected) | 29 | 22 | 15 | 104 | 6.4 | 84 | 1.2 | 29 | 62 |
| February | 30 | 22 | 11 | 85 | 7.2 | 81 | 1.1 | 29 | 67 |
How do the previous and next months compare?
Baseline: January (62/100)
Positive and negative values show the change from the selected month.
| Score Δ | Average high Δ | Average low Δ | Rainy days Δ | Rain Δ | Sun Δ | Humidity Δ | Wind Δ | Sea Δ | |
|---|---|---|---|---|---|---|---|---|---|
| December | -7 | -0.4 °C | +0.7 °C | +8.6 | +114.2 mm | -0.7 h | +2.7 % | ±0 m/s | +0.1 °C |
| February | +5 | +0.8 °C | +0.2 °C | -4.1 | -19.4 mm | +0.8 h | -2.5 % | -0.1 m/s | +0.3 °C |
All twelve months in context

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Where to stay in Penang
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Useful next decisions
Frequently asked questions
How warm is Penang in January?
The average daily high is around 29 °C, with an average daily low of about 22 °C.
Can you swim in Penang in January?
The sea is about 29 °C (very warm).
Does it rain a lot in Penang in January?
The curated estimate is about 15 rainy days per month, not a directly measured long-term average. Total precipitation averages around 104 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit Penang?
By the climate score, January and February are the strongest months for Penang. For a beach trip: January, February, October and December. January is one of them.