Temperature
Hot by day, warm at night.
89°Ftypical September high
Typical range
September climate
September in Penang
Malaysia · Southeast Asia
Humid air is the main limitation.
Wet but workable
Daytime high
89°F
Lows around 76°F
Rain
Rain most days
Sun
5.5 h/day
Air feel
Very humid
Sea temp
85°F
Great for swimming
When to visit
Month-by-month fit
Best
Precipitation
It rains on most days. About 25 wet days, more than in most months.
83%wet-day frequency
AmountWet-day chance
Sunshine
Cloudier spells limit sunshine.
5.4 hSeptember sunshine
Heat & humidity by month
Very humid air is a major factor this month.
63%September Heat feel
Humid airVery humid air
Hourly temperature pattern
In September, afternoons feel about 96° and nights feel near 87°.
HotSwelteringNight hours
Clear sky
Overcast skies this month.
11%September Clear sky
Clear skyCloud
Wind pattern
Calm winds are typical in September.
3 mphSeptember Calm
Sea temperature
85°FSeptember sea temp
More detailIncludes daypart comfort
Typical September day
September late afternoons are around 87°F, easing to about 83°F in early evening.
Avg temp Typical range
Morning81°F
Feels 90°F
Rain31%
Cloud86%
Humid airVery high
Sun intensityLow
Best windowMidday87°F
Feels 96°F
Rain54%
Cloud87%
Humid airVery high
Sun intensityStrong
Late afternoon87°F
Feels 95°F
Rain68%
Cloud91%
Humid airVery high
Sun intensityModerate
Early evening83°F
Feels 92°F
Rain45%
Cloud93%
Humid airVery high
Sun intensityMinimal
Data tableView month-by-month numbers
View month-by-month numbers
| Month | High°F | Low°F | Rainin | Wet days | Sunh | Humidity% | Sea°F |
|---|---|---|---|---|---|---|---|
| Jan | 89 | 76 | 6.5 | 21 | 8.0 | 81 | 83 |
| Feb | 90 | 76 | 5.4 | 18 | 8.3 | 79 | 84 |
| Mar | 91 | 77 | 8.1 | 24 | 7.6 | 80 | 85 |
| Apr | 91 | 77 | 9.6 | 28 | 7.5 | 82 | 86 |
| May | 91 | 78 | 8.5 | 26 | 6.6 | 82 | 87 |
| Jun | 90 | 77 | 5.4 | 20 | 6.7 | 80 | 86 |
| Jul | 90 | 77 | 4.9 | 18 | 6.6 | 79 | 86 |
| Aug | 90 | 77 | 7.0 | 22 | 6.1 | 80 | 85 |
| Sep | 89 | 76 | 8.8 | 25 | 5.4 | 83 | 85 |
| Oct | 88 | 76 | 13.5 | 28 | 5.5 | 85 | 85 |
| Nov | 88 | 76 | 14.8 | 28 | 6.1 | 86 | 85 |
| Dec | 88 | 76 | 10.4 | 24 | 6.7 | 84 | 84 |
Similar climates
Similar
Similar travel styleKuala LumpurMalaysiaSimilar travel styleBaliIndonesiaSimilar travel styleHo Chi Minh CityVietnamSimilar travel styleFort-de-FranceMartinique
Want a side-by-side climate view? Compare Penang with Kuala Lumpur.
Climate data notePlanning guidance, not a forecast
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Sunshine: reviewed station-normal observations.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Jun 13, 2026
Data & methodology