Perai weather in January

In January, Perai sees average daytime highs of 32°C and overnight lows near 24°C, with 109 mm of rain across 15.1 wet days and about 11.7 hours of daylight. It is the 6th-warmest and 11th-wettest month of the year here.

Day-to-day highs hold fairly steady near 32°C through the month. The sky is clear or mostly clear about 15% of the time in January, and the air most often feels oppressive.

Daylight stretches from about 11 h 42 min at the start of January to 11 h 48 min by month's end. Set against the rest of the year, January is Perai's 2nd-clearest and 4th-windiest month. For the whole year in context, see Perai's year-round climate.

Daytime high
32°
6th warmest
Overnight low
24°
1st coldest
Rainfall
109 mm
15.1 wet days
Daylight
11 h 42 min
7:36 AM – 7:19 PM
Cloud cover
72%
2nd clearest
Wind
5 km/h
4th windiest
Solar energy
5.05 kWh/m²
Travel score
3.6
out of 10

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 32°C through the month.

A typical January day in Perai reaches about 32°C in the afternoon and slips back to 24°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 30°C and 33°C. Set against its neighbours, January runs about 1°C warmer than December and about 1°C cooler than February.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13124
23124
33124
43124
53124
63124
73124
83124
93124
103124
113124
123224
133224
143224
153224
163224
173224
183224
193224
203224
213224
223224
233224
243224
253224
263224
273224
283224
293224
303224
313224

How January really feels in Perai

Once humidity and wind are folded in, January averages 31 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
31
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in January is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Perai weather by month

How January compares with the rest of the year at a glance. January is the 6th-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan32° / 24°10915.111.73.6
Feb32° / 25°9814.611.83.2
Mar33° / 25°17322.1122.7
Apr32° / 25°2172712.12.3
May32° / 25°22026.612.22.4
Jun32° / 25°14720.112.32.9
Jul32° / 25°14820.512.33.0
Aug32° / 25°18623.312.22.8
Sep31° / 25°23125.5122.7
Oct31° / 25°3262911.92.5
Nov31° / 25°31427.211.82.6
Dec31° / 24°19120.211.73.3

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 15% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 14% of January, with mostly cloudy or overcast conditions the remaining 70%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12476
22476
32674
42674
52773
62971
72971
83070
93070
103169
113169
123169
133169
143070
153070
163070
173070
183070
193070
203070
213070
223070
233070
243070
253169
263169
273169
283169
293268
303268
313268

Chance of precipitation in January

Any precipitation

Perai gets around 109 mm of rain over 15.1 wet days in January. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 49% and peaks near 53% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
153
253
352
452
551
651
750
850
949
1049
1148
1248
1348
1448
1548
1648
1748
1848
1948
2048
2148
2248
2348
2448
2548
2647
2747
2847
2947
3046
3146

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

Most of January feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, January lands in the oppressive band about 66% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
156629
256728
356728
456728
556827
666727
766826
866826
966826
1076825
1176825
1276924
1376924
1476924
1586824
1686824
1786824
1886824
1996724
2096724
2196724
22106525
23106525
24116425
25116326
26126226
27126226
28126226
29136126
30136126
31136126

Wind in January

Winds average 5 km/h in January.

Across January, daily wind ranges from about 5 km/h on the calmest days to 5 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm
315calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 11 h 42 min at the start of January to 11 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 6 minutes over January. Sunrise moves from 7:31 AM to 7:39 AM, and sunset from 7:12 PM to 7:25 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.77:317:12
211.77:317:13
311.77:327:13
411.77:327:14
511.77:327:14
611.77:337:15
711.77:337:15
811.77:347:16
911.77:347:16
1011.77:347:17
1111.77:357:17
1211.77:357:18
1311.77:357:18
1411.77:367:18
1511.77:367:19
1611.77:367:19
1711.77:367:20
1811.77:377:20
1911.77:377:21
2011.77:377:21
2111.77:377:21
2211.77:387:22
2311.77:387:22
2411.77:387:22
2511.77:387:23
2611.77:387:23
2711.87:387:24
2811.87:397:24
2911.87:397:24
3011.87:397:24
3111.87:397:25

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 5.05 kWh/m².

For context, solar energy here swings from a low near 4.25 kWh/m² to a high of 5.72 kWh/m² in March across the year — January's 5.05 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
14.7Bright
24.7Bright
34.7Bright
44.8Bright
54.8Bright
64.8Bright
74.8Bright
84.9Bright
94.9Bright
104.9Bright
115.0Bright
125.0Bright
135.0Bright
145.0Bright
155.1Bright
165.1Bright
175.1Bright
185.1Bright
195.2Bright
205.2Bright
215.2Bright
225.2Bright
235.2Bright
245.2Bright
255.3Bright
265.3Bright
275.3Bright
285.3Bright
295.3Bright
305.4Bright
315.4Bright
Planning a trip in January

Hazard calendar for Perai

In seasonPeak

In January, Perai sits inside its pacific typhoon season. The full year is below, with each hazard's peak months called out.

Perai sits in the Pacific typhoon belt; the season peaks July–October.

Pacific typhoon
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is January a good time to visit Perai?

Our two travel scores rate January for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

3.6
Sightseeing
1st-best month of the year
5.6
Beach & pool
1st-best month of the year

January is a weaker month for outdoor sightseeing in Perai.

What to pack for Perai in January

From January's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In January, Perai sees daytime highs around 32°C and nights near 24°C. Pack light clothes and rain gear. Worth having: sun protection. About 15 days see rain.

light clothesrain gearsun protection

Sea temperature near Perai in January

The nearest coast averages about 29°C in January — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 27 km away) is warmest in May at about 31°C and coldest in January near 29°C.

The water stays above 20°C all year — warm enough for a swim any month.

28°30°32°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan29Tropical
Feb29Tropical
Mar30Tropical
Apr30Tropical
May31Tropical
Jun31Tropical
Jul30Tropical
Aug30Tropical
Sep30Tropical
Oct30Tropical
Nov29Tropical
Dec29Tropical

UV index in Perai in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Perai peaks around February 18 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 16 at about 10 (very high).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeExtremeFeb 18UV 14Jul 16UV 10
UV index (midday)Level
Jan12Extreme
Feb14Extreme
Mar13Extreme
Apr13Extreme
May10Extreme
Jun11Extreme
Jul10Very high
Aug11Extreme
Sep13Extreme
Oct12Extreme
Nov11Extreme
Dec10Extreme

Air quality in Perai in January

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where January falls, not just the annual average.

Air quality in Perai is worst in March — around 31 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

Modeled monthly averages (CAMS reanalysis, 2015–2024).

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateMar 1631 µg/m³Nov 2026 µg/m³
PM2.5 (µg/m³)Level
Jan28Moderate
Feb29Moderate
Mar31Moderate
Apr28Moderate
May27Moderate
Jun28Moderate
Jul31Moderate
Aug29Moderate
Sep30Moderate
Oct30Moderate
Nov26Moderate
Dec27Moderate
Location & terrain

Where is Perai?

Perai sits at 5.4°N, 100.4°E, 5 m above sea level, in Malaysia. The nearest listed city is Butterworth, 3.0 km away.

Topography around Perai

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Perai.

Within 3 km, the terrain around Perai has only modest variations in elevation — a maximum elevation change of 33 m around an average of 4 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 842 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,832 m.

The land around Perai is covered by artificial surfaces (53%) and water (28%) within 3 km, water (34%), trees (28%) and artificial surfaces (23%) within 16 km, and trees (45%) and water (43%) within 80 km.

3 km
33 m
16 km
842 m
80 km
1,832 m
treesgrasslandcroplandartificial surfacesbare terrainwatermangroves
January weather nearby: Butterworth 3.0 km · George Town 6.0 km · Jelutong 7.0 km · Bukit Tengah 7.0 km · Kampung Sungai Glugur 8.0 km · Sungai Dua 8.0 km · Kubang Semang 9.0 km · Glugor 9.0 km

Malaysia travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / G / M
230 V · 50 Hz
Prices
≈ 32% of US
price level, 2025
GDP per capita
$13,125
2025
Happiness
6.0 / 10
World Happiness, 2025
Safe drinking water
95%
of population, 2024
Homicide rate
0.7
per 100k, 2023
Road deaths
22.5
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
High
EF EPI 581
Religion
Muslim 64%Buddhist 19%Christian 9%Hindu 6%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Perai (5.3833°, 100.3833°, elevation 5 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).