Koror weather in January

In January, Koror sees average daytime highs of 28°C and overnight lows near 26°C, with 239 mm of rain across 22.9 wet days and about 11.6 hours of daylight. It is the 10th-warmest and 9th-wettest month of the year here.

Day-to-day highs hold fairly steady near 28°C through the month. The sky is clear or mostly clear about 18% of the time in January, and the air most often feels miserable.

Daylight stretches from about 11 h 36 min at the start of January to 11 h 42 min by month's end. Set against the rest of the year, January is Koror's 4th-clearest and 2nd-windiest month. For the whole year in context, see Koror's year-round climate.

Daytime high
28°
10th warmest
Overnight low
26°
6th coldest
Rainfall
239 mm
22.9 wet days
Daylight
11 h 36 min
6:23 AM – 6:00 PM
Cloud cover
71%
4th clearest
Wind
23 km/h
2nd windiest
Solar energy
5.07 kWh/m²
Travel score
4.4
out of 10

Koror is city and former capital of Palau.

Founded
1866

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 28°C through the month.

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

24°26°28°30°32°151015202531
Avg high (°C)Avg low (°C)
12826
22826
32826
42826
52826
62826
72826
82826
92826
102826
112826
122826
132826
142826
152826
162826
172826
182826
192826
202826
212826
222826
232826
242826
252826
262826
272826
282826
292826
302826
312826

How January really feels in Koror

Once humidity and wind are folded in, January averages 10 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
10
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.

Koror weather by month

How January compares with the rest of the year at a glance. January is the 10th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 26°23922.911.64.4
Feb28° / 26°21819.211.84.7
Mar28° / 26°15819.5124.9
Apr28° / 26°18621.312.24.5
May28° / 26°29126.712.33.6
Jun28° / 26°34727.812.43.4
Jul28° / 26°33726.812.43.7
Aug28° / 26°27025.112.24.0
Sep28° / 26°27024.2123.9
Oct28° / 26°2582511.83.8
Nov28° / 26°2672611.73.6
Dec28° / 26°28126.611.63.7

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 18% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 15% of January, with mostly cloudy or overcast conditions the remaining 66%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12773
22872
32872
42971
52971
62971
72971
83070
93070
103070
113070
123070
133169
143169
153268
163367
173466
183466
193664
203664
213763
223862
233862
243961
253961
263961
273961
283862
293862
303763
313664

Chance of precipitation in January

Any precipitation

Koror gets around 239 mm of rain over 22.9 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 74% and peaks near 80% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
180
280
379
479
578
678
777
876
976
1075
1175
1275
1374
1474
1574
1674
1774
1873
1973
2073
2173
2272
2372
2472
2572
2671
2771
2871
2970
3070
3169

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, January lands in the miserable band about 54% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
103070
203169
303268
403367
503466
603565
703763
803862
903961
1004060
1104159
1204258
1304357
1404456
1504555
1604753
1704852
1804951
1904951
2005149
2105149
2205248
2305347
2405446
2505545
2615544
2715643
2815742
2915841
3015940
3116039

Wind in January

Winds average 23 km/h in January.

Across January, daily wind ranges from about 23 km/h on the calmest days to 24 km/h at its breeziest. It stays fairly steady from day to day.

0102030151015202531
Wind speed (km/h)Feels
123breezy
223breezy
323breezy
423breezy
523breezy
623breezy
723breezy
823breezy
923breezy
1023breezy
1123breezy
1223breezy
1323breezy
1423breezy
1523breezy
1623breezy
1723breezy
1823breezy
1923breezy
2023breezy
2124breezy
2224breezy
2324breezy
2424breezy
2524breezy
2624breezy
2724breezy
2824breezy
2924breezy
3024breezy
3124breezy

Sunrise & sunset in January

DaylightNight

Daylight runs from about 11 h 36 min at the start of January to 11 h 42 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 6:18 AM to 6:25 AM, and sunset from 5:53 PM to 6:06 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.66:185:53
211.66:185:53
311.66:195:54
411.66:195:54
511.66:195:55
611.66:205:55
711.66:205:56
811.66:215:56
911.66:215:57
1011.66:215:57
1111.66:225:58
1211.66:225:58
1311.66:225:59
1411.66:225:59
1511.66:235:59
1611.66:236:00
1711.66:236:00
1811.66:236:01
1911.66:246:01
2011.66:246:02
2111.66:246:02
2211.66:246:02
2311.66:246:03
2411.66:246:03
2511.76:256:04
2611.76:256:04
2711.76:256:04
2811.76:256:05
2911.76:256:05
3011.76:256:05
3111.76:256:06

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 5.07 kWh/m².

For context, solar energy here swings from a low near 4.67 kWh/m² to a high of 5.97 kWh/m² in April across the year — January's 5.07 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
14.9Bright
24.9Bright
34.9Bright
44.9Bright
54.9Bright
64.9Bright
74.9Bright
84.9Bright
94.9Bright
104.9Bright
114.9Bright
124.9Bright
134.9Bright
145.0Bright
155.0Bright
165.0Bright
175.0Bright
185.0Bright
195.0Bright
205.1Bright
215.1Bright
225.1Bright
235.1Bright
245.1Bright
255.2Bright
265.2Bright
275.2Bright
285.2Bright
295.2Bright
305.3Bright
315.3Bright
Planning a trip in January

Hazard calendar for Koror

In seasonPeak

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

Koror 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 Koror?

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

4.4
Sightseeing
4th-best month of the year
4.7
Beach & pool
4th-best month of the year

January is a reasonable time to visit Koror for sightseeing.

What to pack for Koror in January

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

In January, Koror sees daytime highs around 28°C and nights near 26°C. Pack light clothes and rain gear. Worth having: sun protection and a windbreaker. About 23 days see rain.

light clothesrain gearsun protectiona windbreaker

Sea temperature near Koror 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 offshore is warmest in June at about 30°C and coldest in February near 28°C.

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

26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan28Tropical
Feb28Tropical
Mar28Tropical
Apr29Tropical
May29Tropical
Jun30Tropical
Jul29Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov29Tropical
Dec29Tropical

UV index in Koror 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 Koror peaks around March 24 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 13 at about 11 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 24UV 15Dec 13UV 11
UV index (midday)Level
Jan12Extreme
Feb14Extreme
Mar15Extreme
Apr15Extreme
May14Extreme
Jun12Extreme
Jul13Extreme
Aug14Extreme
Sep12Extreme
Oct14Extreme
Nov11Extreme
Dec11Extreme
Location & terrain

Where is Koror?

Koror sits at 7.3°N, 134.5°E, 0 m above sea level, in Palau. The nearest listed city is Ngerulmud, 24 km away.

Ngerulmud

Topography around Koror

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

Within 3 km, the terrain around Koror has only modest variations in elevation — a maximum elevation change of 155 m around an average of 9 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 205 m; within 80 km, only modest variations in elevation — a maximum elevation change of 224 m.

The land around Koror is covered by water (67%) and trees (22%) within 3 km, water (79%) within 16 km, and water (96%) within 80 km.

3 km
155 m
16 km
205 m
80 km
224 m
treesgrasslandartificial surfaceswatermangroves
January weather nearby: Ngerulmud 24 km · Manay 875 km · Daruba 903 km · Hinatuan 904 km · Bislig 904 km · Mati 912 km · Manokwari 913 km · Tagbina 923 km

Palau travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 85% of US
price level, 2025
GDP per capita
$19,532
2025
Safe drinking water
91%
of population, 2024
Homicide rate
11.2
per 100k, 2018
Road deaths
4.8
per 100k/yr, 2013
Income group
High
World Bank
Religion
Roman Catholic 47%Protestant 31%other 12%Modekngei 5%

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 Koror (7.3398°, 134.4733°, elevation 0 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).