Tamuning-Tumon-Harmon Village weather in January

In January, Tamuning-Tumon-Harmon Village sees average daytime highs of 27°C and overnight lows near 26°C, with 71 mm of rain across 14.7 wet days and about 11.3 hours of daylight. It is the 10th-warmest and 9th-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 44% of the time in January, and the air most often feels oppressive.

Daylight stretches from about 11 h 12 min at the start of January to 11 h 24 min by month's end. Set against the rest of the year, January is Tamuning-Tumon-Harmon Village's 5th-clearest and 2nd-windiest month. For the whole year in context, see Tamuning-Tumon-Harmon Village's year-round climate.

Daytime high
27°
10th warmest
Overnight low
26°
3rd coldest
Rainfall
71 mm
14.7 wet days
Daylight
11 h 18 min
6:52 AM – 6:09 PM
Cloud cover
50%
5th clearest
Wind
30 km/h
2nd windiest
Solar energy
5.15 kWh/m²
Travel score
6.0
out of 10

Tamuning-Tumon-Harmon Village is village of Guam, a municipality in the United States territory.

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 27°C through the month.

A typical January day in Tamuning-Tumon-Harmon Village reaches about 27°C in the afternoon and slips back to 26°C overnight — a 1°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.

24°26°28°30°32°151015202531
Avg high (°C)Avg low (°C)
12726
22726
32726
42726
52726
62726
72726
82726
92726
102726
112726
122726
132726
142726
152726
162726
172726
182726
192726
202726
212726
222726
232726
242726
252726
262726
272726
282726
292726
302726
312726

How January really feels in Tamuning-Tumon-Harmon Village

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.

Tamuning-Tumon-Harmon Village 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
Jan27° / 26°7114.711.36.0
Feb27° / 26°5111.311.66.3
Mar27° / 26°4510.211.96.7
Apr27° / 26°6711.112.36.5
May28° / 27°811512.65.6
Jun28° / 27°14020.412.84.4
Jul28° / 26°27328.412.73.3
Aug28° / 26°35029.212.43.2
Sep28° / 26°31427.212.13.3
Oct28° / 26°27927.511.73.6
Nov28° / 27°17521.511.44.5
Dec28° / 26°9316.811.25.6

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 44% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 21% of January, with mostly cloudy or overcast conditions the remaining 35%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16733
26634
36634
46634
56535
66535
76436
86436
96436
106337
116337
126337
136337
146337
156337
166337
176436
186436
196535
206535
216634
226634
236634
246634
256634
266634
276535
286535
296436
306436
316436

Chance of precipitation in January

Any precipitation

Tamuning-Tumon-Harmon Village gets around 71 mm of rain over 14.7 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 48% and peaks near 51% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
148
248
348
448
548
649
749
850
950
1050
1151
1251
1350
1450
1550
1649
1749
1848
1948
2047
2147
2246
2346
2446
2545
2645
2745
2844
2944
3044
3143

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 75% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1046927
2047125
3057124
4057322
5057421
6057520
7067420
8067519
9067618
10077518
11077617
12087517
13087616
14087715
15097615
160107614
170107713
180117613
190127612
200127711
210137710
220147610
23014779
24015769
25116749
26116758
27117748
28117748
29117748
30118738
31118738

Wind in January

Winds average 30 km/h in January.

Across January, daily wind ranges from about 29 km/h on the calmest days to 30 km/h at its breeziest. It stays fairly steady from day to day.

0102030151015202531
Wind speed (km/h)Feels
129windy
229windy
329windy
429windy
529windy
629windy
729windy
830windy
930windy
1030windy
1130windy
1230windy
1330windy
1430windy
1530windy
1630windy
1730windy
1830windy
1930windy
2030windy
2130windy
2230windy
2330windy
2430windy
2530windy
2630windy
2730windy
2830windy
2930windy
3030windy
3130windy

Sunrise & sunset in January

DaylightNight

Daylight runs from about 11 h 12 min at the start of January to 11 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 12 minutes over January. Sunrise moves from 6:48 AM to 6:52 AM, and sunset from 6:01 PM to 6:16 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.26:486:01
211.26:486:01
311.26:486:02
411.26:496:02
511.26:496:03
611.26:496:03
711.26:506:04
811.26:506:04
911.26:506:05
1011.36:506:05
1111.36:516:06
1211.36:516:07
1311.36:516:07
1411.36:516:08
1511.36:516:08
1611.36:526:09
1711.36:526:09
1811.36:526:10
1911.36:526:10
2011.36:526:11
2111.36:526:11
2211.36:526:12
2311.36:526:12
2411.36:526:13
2511.36:526:13
2611.46:526:14
2711.46:526:14
2811.46:526:15
2911.46:526:15
3011.46:526:16
3111.46:526:16

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 5.15 kWh/m².

For context, solar energy here swings from a low near 4.86 kWh/m² to a high of 6.68 kWh/m² in April across the year — January's 5.15 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.2Bright
25.2Bright
35.2Bright
45.1Bright
55.1Bright
65.1Bright
75.1Bright
85.1Bright
95.0Bright
105.0Bright
115.0Bright
125.0Bright
135.0Bright
145.0Bright
155.0Bright
165.0Bright
175.0Bright
185.0Bright
195.0Bright
205.0Bright
215.0Bright
225.1Bright
235.1Bright
245.1Bright
255.1Bright
265.2Bright
275.2Bright
285.2Bright
295.2Bright
305.3Bright
315.3Bright
Planning a trip in January

Hazard calendar for Tamuning-Tumon-Harmon Village

In seasonPeak

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

Tamuning-Tumon-Harmon Village sits in the Pacific typhoon belt; the season peaks July–October.

Tamuning-Tumon-Harmon Village's monsoon runs July–November, when most of the year's rain falls.

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

Is January a good time to visit Tamuning-Tumon-Harmon Village?

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

6.0
Sightseeing
4th-best month of the year
6.1
Beach & pool
5th-best month of the year

January is a reasonable time to visit Tamuning-Tumon-Harmon Village for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Tamuning-Tumon-Harmon Village in January

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

In January, Tamuning-Tumon-Harmon Village sees daytime highs around 27°C and nights near 26°C. Pack light clothes, rain gear and a windbreaker. Worth having: sun protection. About 15 days see rain.

light clothesrain geara windbreakersun protection

Sea temperature near Tamuning-Tumon-Harmon Village 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 16 km away) is warmest in July at about 29°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
Jan28Warm
Feb28Warm
Mar28Warm
Apr28Tropical
May29Tropical
Jun29Tropical
Jul29Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov29Tropical
Dec28Tropical

UV index in Tamuning-Tumon-Harmon Village in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Tamuning-Tumon-Harmon Village peaks around August 18 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 at about 9 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highAug 18UV 14Dec 19UV 9
UV index (midday)Level
Jan10Very high
Feb11Extreme
Mar13Extreme
Apr13Extreme
May13Extreme
Jun12Extreme
Jul13Extreme
Aug14Extreme
Sep13Extreme
Oct12Extreme
Nov10Extreme
Dec9Very high
Location & terrain

Where is Tamuning-Tumon-Harmon Village?

Tamuning-Tumon-Harmon Village sits at 13.5°N, 144.8°E, 13 m above sea level, in Guam. The nearest listed city is Tumon, 0.0 km away.

HagatnaMangilao VillageDededo VillageYigo Village

Topography around Tamuning-Tumon-Harmon Village

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Tamuning-Tumon-Harmon Village.

Within 3 km, the terrain around Tamuning-Tumon-Harmon Village has only modest variations in elevation — a maximum elevation change of 109 m around an average of 31 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 308 m; within 80 km, significant variations in elevation — a maximum elevation change of 387 m.

The land around Tamuning-Tumon-Harmon Village is covered by water (31%), trees (24%) and artificial surfaces (23%) within 3 km, water (59%) and trees (28%) within 16 km, and water (94%) within 80 km.

3 km
109 m
16 km
308 m
80 km
387 m
treesgrasslandartificial surfacesbare terrainwater
January weather nearby: Tumon 0.0 km · Hagatna 4.0 km · Mangilao Village 5.0 km · Dededo Village 7.0 km · Yigo Village 13 km · Saipan 219 km · Ngerulmud 1,294 km · Koror 1,318 km

Guam travel facts

Power plugs
Type A / B
110 V · 60 Hz
GDP per capita
$41,833
2022
Safe drinking water
94%
of population, 2024
Homicide rate
4.3
per 100k, 2019
Income group
High
World Bank
Religion
Christian 94%unaffiliated 2%other 2%folk religions 2%

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 Tamuning-Tumon-Harmon Village (13.4877°, 144.7814°, elevation 13 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).