Penang (George Town) weather in January

January in Penang: sweltering, rainy, with muggy air — fine if you can take 36°C afternoons.

Updated September 2026 · climate normals from ERA5 reanalysis

Penang🇲🇾 Malaysia · Malaysia, Singapore & Sumatra · Island84
  1. 84Jan
  2. 87Feb
  3. 80Mar
  4. 73Apr
  5. 65May
  6. 78Jun
  7. 82Jul
  8. 74Aug
  9. 68Sep
  10. 61Oct
  11. 57Nov
  12. 71Dec

#2 of 12 months in Penang · #369 of 1413 destinations to visit in January · comfort 84/100 (tier A)

Days
31°C
Nights
24°C
Wet days
17
Sun
9.4 h
Humidity
80%
Daylight
12 h
Penang, Malaysia
Photo: Richard L · Pexels

Traveller notes on Penang in January

January and February are Penang's driest months, and the forum's first-hand reports back it: one visitor describes a week in mid-January with rain once or twice for an hour at most, another a ten-day stay with a single 15-minute shower. Read that against the record and "dry" here still means around thirteen rain-days — they are just short ones, not washouts. Temperatures barely move all year: near 28°C by day, 24 overnight, with the sea at 29°C. Regulars rate January to March the best window for George Town's heritage streets and hawker food, since it is the one stretch of the year rain doesn't organise the day around.
Tripadvisor community · January · 1 month ago · Read more on Tripadvisor ↗

Other months in Penang

Regulars are specific that this month falls under the southwest monsoon, which paradoxically brings hot, dry winds here rather than rain - the wetter northeast monsoon doesn't arrive until August at the earliest. Our row backs that hot, genuinely humid read, 30.9C reading as a hot 37C, over 24.6C nights, with a substantial 150.8mm of rain across over 20 days and humidity at 81 percent. Regulars are consistent the island's mountainous interior can split weather sharply by location, one side bone dry while the other sees real rain at the very same time, George Town and Batu Ferringhi sometimes experiencing entirely different days. Regulars are honest that weather apps struggle to capture this local variability accurately. The sea sits at a bath-warm 31.4C. The record: 9.5 hours of sun, a 9.2 kph wind and AQI 68.
OneSideDryOtherSideRainingSameDay · June · 1 month ago · Read more on Tripadvisor ↗
Penang-forum threads on August weather describe hot, humid conditions with rain a real possibility most days, though posters are consistent it's rarely an all-day event - a heavy burst lasting an hour or so, then clearing back to sun. Because the island itself is hilly, the pattern is genuinely local: one part of Penang can get soaked while another stays entirely clear at the same hour, so a downpour at the hotel doesn't necessarily mean a washed-out day elsewhere. Several long-time repeat visitors report entire August stays with barely a drop, underscoring how much this varies year to year. Warm enough for swimming and lounging by the pool is the year-round baseline here regardless of the specific week. Regulars call George Town's covered walkways and street-food halls an easy backup plan whenever a shower does roll through. The record: 30.4C days feeling like a punishing 36C, 24.1C nights, a 31.1C sea and 82 percent humidity.
GeorgeTownAugustRegular · August · 1 month ago · Read more on Tripadvisor ↗
Penang-forum threads asking if September is a poor time to visit are reassuring: officially inside the rainy season, but posters say it seldom rains during the day, and when it does it's typically a downpour lasting ten to twenty minutes rather than settling in. Trip reports describe a genuine mix of sun, cloud and rain, with a decent amount of actual sunshine most visits. Heat and humidity stay constant regardless of whether it's raining, even a rainy stretch still feeling warm rather than cool. One specific upside regulars mention: the rain is said to clear residual haze from the air, leaving noticeably clearer blue skies than the hazier months, genuinely pleasant for sightseeing around Georgetown. The record: 29.8C days feeling like a punishing 36C, 23.7C nights, a notably high 237mm across 25.6 days, 83 percent humidity, a 30.7C sea and 8.5 hours of sun.
GeorgetownSeptemberRegular · September · 1 month ago · Read more on Tripadvisor ↗
March is the driest part of the Penang year and regulars recommend it on that basis - late January through March is the dry, humid stretch, and one visitor's mid-March report is simply boiling, very sunny and over 30C. Our row's 31.6C reads as 38C in this humidity, at 80 percent. Note what driest means here: 149.1mm still falls across 21.4 precipitation days, which is the least of Penang's twelve months rather than a dry month in any ordinary sense. The other March point is the air. The haze that reaches Malaysia does not usually arrive at the start of the year, because the north-east monsoon pushes the wind towards Indonesia; it is a summer problem, and tends to last a day or two at a time. The record: 24.8C nights, 10.2 hours of sun and a 30.6C sea.
LeastRainIsStillTwentyDays · March · 1 month ago · Read more on Tripadvisor ↗

Year-round notes are on Penang's overview. Add your own note from Penang's card on the map.

Penang climate normals — January

Daytime high31°C / 87°F🔥 sweltering
Nighttime low24°C / 75°F
Feels like (high)36°C / 97°F
Sea temperature29°C / 85°F♨️ bath-warm
Rainfall113 mm / 4.5 in🌧 rainy
Rainy days17 days
Humidity80%💦 very humid
Dew point22°C / 71°F
Sunshine9.4 h/day
Daylight11.8 h
Wind9 km/h / 5 mph
Air quality (US AQI)62🙂 moderate

Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.

Crowds in Penang in January

How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.

Peak crowdsThaipusam, Chinese New Year and Chap Goh Meh, school holidays in 6 of the markets that fill it(estimated)

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Peak crowdsBusyShoulder seasonQuiet

Best months for Penang's weather

Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).

Best weatherPenang's best weather comes in January, February and July — separate windows, not one continuous season.

January includes Thaipusam.

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Best weatherFair weatherToughest weather

What's on in Penang in January

Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.

  • Festival

    Thaipusam

    20 Jan – 15 Feb · usuallyReligious feastCrowdedClosures

    A silver chariot is pulled from Little India up to the Waterfall Temple over three days, with kavadi bearers, coconut smashing and a crowd well into six figures. Roads through George Town close and shops shut along the route. Source ↗

  • Holiday

    Chinese New Year and Chap Goh Meh

    25 Jan – 10 Mar · usuallyLunar New YearClosuresCrowded

    Two weeks of clan-house open houses and temple queues, ending at Chap Goh Meh when unmarried women throw oranges into the sea at the Esplanade. Many kopitiams and hawker stalls close for the first three days. Source ↗

  • Holiday

    Malaysian year-end break

    20 Nov – 5 Jan · usuallySchool holidaysCrowded

    The long school holiday brings peninsular families and Singapore weekenders to Batu Ferringhi and the hill, and the ferry and bridge traffic goes with them. George Town's guesthouses fill last but they do fill. Source ↗

What's on around the world in January →

Nearby, and something's on

Within 300 km of Penang — a day trip or a short hop — with something on this month. Never part of the comfort score.

Where is Penang?

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Penang in January — FAQ

Is January a good time to visit Penang?
January in Penang: sweltering, rainy, with muggy air — fine if you can take 36°C afternoons. It ranks #2 of 12 months for Penang on SeasonMap's comfort score (84/100).
What is the weather like in Penang in January?
In January, Penang averages a daily high of 30.7°C and a low of 24.1°C, with about 113.3 mm of rain over roughly 17.4 rainy days.
What is the air quality in Penang in January?
Penang has a mean US Air Quality Index of about 62 in January.

Within 300 km: Kuala Lumpur's Thaipusam at Batu Caves around 15 Jan – 15 Feb, and Langkawi's Dry season around 1 Dec – 31 Mar.