Thomson weather in January

In January, Thomson sees average daytime highs of 27°C and overnight lows near 25°C, with 160 mm of rain across 19.1 wet days and about 11.9 hours of daylight. It is the 11th-warmest and 10th-wettest month of the year here.

Day-to-day highs hold fairly steady near 27°C through the month. The sky is clear or mostly clear about 7% of the time in January, and the air most often feels oppressive.

Daylight stretches from about 11 h 54 min at the start of January to 11 h 54 min by month's end. Set against the rest of the year, January is Thomson's 10th-clearest and 1st-windiest month. For the whole year in context, see Thomson's year-round climate.

Daytime high
27°
11th warmest
Overnight low
25°
1st coldest
Rainfall
160 mm
19.1 wet days
Daylight
11 h 54 min
7:16 AM – 7:12 PM
Cloud cover
82%
10th clearest
Wind
18 km/h
1st windiest
Solar energy
4.88 kWh/m²
Travel score
4.8
out of 10

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 27°C through the month.

A typical January day in Thomson reaches about 27°C in the afternoon and slips back to 25°C overnight — a 2°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 28°C. Set against its neighbours, January runs on par with December and on par with February.

20°23°25°28°30°151015202531
Avg high (°C)Avg low (°C)
12725
22725
32725
42725
52725
62725
72725
82725
92725
102725
112725
122725
132725
142725
152725
162725
172725
182725
192725
202725
212725
222725
232725
242725
252725
262725
272725
282725
292725
302725
312725

How January really feels in Thomson

Once humidity and wind are folded in, January averages 0 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
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

January sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Thomson weather by month

How January compares with the rest of the year at a glance. January is the 11th-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 25°16019.111.94.8
Feb28° / 25°8713.4125.4
Mar28° / 26°14320.5124.4
Apr29° / 26°19126123.5
May29° / 27°22426.712.13.4
Jun29° / 27°19923.212.13.8
Jul28° / 27°1952312.14.0
Aug28° / 26°17823.2124.0
Sep28° / 26°16121.1124.1
Oct28° / 26°20124.6123.8
Nov28° / 26°28027.811.93.5
Dec27° / 26°26724.711.94.0

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 7% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 9% of January, with mostly cloudy or overcast conditions the remaining 84%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
11288
21387
31486
41486
51486
61684
71684
81684
91684
101882
111882
121783
131783
141783
151882
161882
171783
181783
191783
201684
211684
221684
231684
241585
251585
261585
271585
281684
291684
301783
311783

Chance of precipitation in January

Any precipitation

Thomson gets around 160 mm of rain over 19.1 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 61% and peaks near 70% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
170
269
369
468
568
667
766
865
964
1063
1163
1262
1361
1461
1560
1659
1759
1858
1958
2057
2157
2257
2357
2457
2558
2658
2758
2857
2957
3056
3155

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 86% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
118415
218316
318316
418316
518316
618316
718415
818415
918415
1018514
1118514
1218613
1318613
1428612
1528612
1628711
1728810
1828810
1928810
2028810
2138710
2238710
2338710
2438710
2538710
2638710
2738710
2838710
2938710
3038710
3138710

Wind in January

Winds average 18 km/h in January, the windiest month of the year.

Across January, daily wind ranges from about 17 km/h on the calmest days to 18 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202531
Wind speed (km/h)Feels
117light breeze
217light breeze
317light breeze
417light breeze
518light breeze
618light breeze
718light breeze
818light breeze
918light breeze
1018light breeze
1118light breeze
1218light breeze
1318light breeze
1418light breeze
1518light breeze
1618light breeze
1718light breeze
1818light breeze
1918light breeze
2018light breeze
2118light breeze
2218light breeze
2318light breeze
2418light breeze
2518light breeze
2618light breeze
2718light breeze
2818light breeze
2918light breeze
3018light breeze
3118light breeze

Sunrise & sunset in January

DaylightNight

Daylight runs from about 11 h 54 min at the start of January to 11 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 0 minutes over January. Sunrise moves from 7:10 AM to 7:20 AM, and sunset from 7:05 PM to 7:16 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.97:107:05
211.97:117:06
311.97:117:06
411.97:117:07
511.97:127:07
611.97:127:08
711.97:137:08
811.97:137:09
911.97:137:09
1011.97:147:09
1111.97:147:10
1211.97:157:10
1311.97:157:11
1411.97:157:11
1511.97:167:11
1611.97:167:12
1711.97:167:12
1811.97:177:13
1911.97:177:13
2011.97:177:13
2111.97:187:14
2211.97:187:14
2311.97:187:14
2411.97:187:14
2511.97:197:15
2611.97:197:15
2711.97:197:15
2811.97:197:16
2911.97:197:16
3011.97:207:16
3111.97:207:16

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 4.88 kWh/m².

For context, solar energy here swings from a low near 4.3 kWh/m² to a high of 5.65 kWh/m² in March across the year — January's 4.88 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
14.5Bright
24.5Bright
34.5Bright
44.6Bright
54.6Bright
64.7Bright
74.7Bright
84.7Bright
94.8Bright
104.8Bright
114.8Bright
124.8Bright
134.9Bright
144.9Bright
154.9Bright
164.9Bright
175.0Bright
185.0Bright
195.0Bright
205.0Bright
215.0Bright
225.0Bright
235.0Bright
245.0Bright
255.0Bright
265.0Bright
275.0Bright
285.1Bright
295.1Bright
305.1Bright
315.1Bright
Planning a trip in January

Is January a good time to visit Thomson?

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

4.8
Sightseeing
2nd-best month of the year
5.1
Beach & pool
3rd-best month of the year

January is a reasonable time to visit Thomson for sightseeing.

What to pack for Thomson in January

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

In January, Thomson sees daytime highs around 27°C and nights near 25°C. Pack light clothes and rain gear. Worth having: sun protection. About 19 days see rain.

light clothesrain gearsun protection

Sea temperature near Thomson in January

The nearest coast averages about 28°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 31 km away) is warmest in May at about 30°C and coldest in January near 28°C.

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

26°28°30°32°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan28Warm
Feb28Warm
Mar29Tropical
Apr30Tropical
May30Tropical
Jun30Tropical
Jul29Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov29Tropical
Dec28Tropical

UV index in Thomson in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Thomson peaks around February 18 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 22 at about 10 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeFeb 18UV 15Jun 22UV 10
UV index (midday)Level
Jan13Extreme
Feb15Extreme
Mar14Extreme
Apr13Extreme
May12Extreme
Jun10Very high
Jul10Very high
Aug13Extreme
Sep12Extreme
Oct13Extreme
Nov11Extreme
Dec11Extreme

Air quality in Thomson 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 Thomson is worst in September — around 46 µg/m³ PM2.5 (poor), about 2.2× the cleanest month (February, 21 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateSep 1945 µg/m³Feb 821 µg/m³
PM2.5 (µg/m³)Level
Jan21Moderate
Feb21Moderate
Mar26Moderate
Apr32Moderate
May35Moderate
Jun33Moderate
Jul37Poor
Aug40Poor
Sep46Poor
Oct43Poor
Nov29Moderate
Dec22Moderate
Location & terrain

Where is Thomson?

Thomson sits at 1.3°N, 103.8°E, 19 m above sea level, in Singapore. The nearest listed city is Bishan New Town, 1.0 km away.

Serangoon GardenSerangoon New TownKallangAng Mo Kio New TownNovenaTanglin

Topography around Thomson

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

Within 3 km, the terrain around Thomson has only modest variations in elevation — a maximum elevation change of 80 m around an average of 21 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 218 m; within 80 km, large variations in elevation — a maximum elevation change of 656 m.

The land around Thomson is covered by artificial surfaces (59%) and trees (33%) within 3 km, artificial surfaces (36%), water (33%) and trees (23%) within 16 km, and water (53%) and trees (36%) within 80 km.

3 km
80 m
16 km
218 m
80 km
656 m
treesgrasslandartificial surfacesbare terrainwatermangroves
January weather nearby: Bishan New Town 1.0 km · Toa Payoh New Town 2.0 km · Serangoon Garden 2.0 km · Serangoon New Town 3.0 km · Kallang 3.0 km · Ang Mo Kio New Town 3.0 km · Novena 4.0 km · Tanglin 5.0 km

Singapore travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / G / M
230 V · 50 Hz
Prices
≈ 60% of US
price level, 2025
GDP per capita
$98,814
2025
Happiness
6.6 / 10
World Happiness, 2025
Safe drinking water
100%
of population, 2024
Homicide rate
0.1
per 100k, 2023
Road deaths
2.1
per 100k/yr, 2019
Income group
High
World Bank
Religion
Buddhist 31%none 20%Christian 19%Muslim 16%

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 Thomson (1.3492°, 103.8436°, elevation 19 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. 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).