Tomohon weather in December

In December, Tomohon sees average daytime highs of 28°C and overnight lows near 22°C, with 323 mm of rain across 30 wet days and about 11.9 hours of daylight. It is the 8th-warmest and 4th-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 1% of the time in December, and the air most often feels oppressive.

Daylight stretches from about 11 h 54 min at the start of December to 11 h 54 min by month's end. Set against the rest of the year, December is Tomohon's 12th-clearest and 5th-windiest month. For the whole year in context, see Tomohon's year-round climate.

Daytime high
28°
8th warmest
Overnight low
22°
11th coldest
Rainfall
323 mm
30 wet days
Daylight
11 h 54 min
5:39 AM – 5:35 PM
Cloud cover
89%
12th clearest
Wind
5 km/h
5th windiest
Solar energy
4.89 kWh/m²
Travel score
3.1
out of 10

Tomohon is city in North Sulawesi Province, Indonesia.

Density
188/km²
people per km²
Founded
2003

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

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

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

A typical December day in Tomohon reaches about 28°C in the afternoon and slips back to 22°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 30°C. Set against its neighbours, December runs on par with November and on par with January.

20°23°25°28°30°151015202531
Avg high (°C)Avg low (°C)
12822
22823
32823
42823
52822
62822
72822
82822
92822
102822
112822
122822
132822
142822
152822
162822
172822
182822
192822
202822
212822
222822
232822
242822
252822
262822
272822
282822
292822
302822
312822

How December really feels in Tomohon

Once humidity and wind are folded in, December 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

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

Tomohon weather by month

How December compares with the rest of the year at a glance. December is the 8th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 22°30428.911.93.5
Feb28° / 22°28225.3123.6
Mar28° / 22°29528.4123.3
Apr29° / 22°33227.4123.2
May29° / 23°3542912.13.1
Jun28° / 22°33926.312.13.6
Jul28° / 22°25323.312.14.3
Aug28° / 22°16618.4124.6
Sep29° / 21°18919.5124.1
Oct29° / 22°27624.7123.5
Nov29° / 22°31928.711.93.0
Dec28° / 22°3233011.93.1

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 1% of the time in December, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 5% of December, with mostly cloudy or overcast conditions the remaining 94%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1694
2694
3694
4694
5694
6694
7793
8793
9793
10793
11793
12793
13694
14694
15694
16694
17694
18694
19595
20595
21595
22595
23595
24595
25595
26595
27595
28595
29595
30595
31595

Chance of precipitation in December

Any precipitation

Tomohon gets around 323 mm of rain over 30 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 97% and peaks near 98% on the wettest days.

0%20%40%60%80%100%151015202531
Rain chance (%)
198
298
397
497
597
697
796
896
996
1096
1196
1296
1396
1496
1596
1696
1796
1897
1997
2097
2197
2297
2397
2497
2597
2697
2797
2897
2997
3096
3196

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the oppressive band about 98% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
10991
20991
30991
40991
50991
60991
70991
80991
90991
100991
110991
120991
130991
140991
150991
160991
170982
180982
190982
200982
210982
220982
231972
241972
251972
261972
271972
281972
292971
302971
312971

Wind in December

Winds average 5 km/h in December.

Across December, daily wind ranges from about 4 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
14calm
24calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 11 h 54 min at the start of December 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 December. Sunrise moves from 5:33 AM to 5:46 AM, and sunset from 5:28 PM to 5:42 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.95:335:28
211.95:335:29
311.95:335:29
411.95:345:30
511.95:345:30
611.95:355:30
711.95:355:31
811.95:365:31
911.95:365:32
1011.95:365:32
1111.95:375:32
1211.95:375:33
1311.95:385:33
1411.95:385:34
1511.95:395:34
1611.95:395:35
1711.95:405:35
1811.95:405:36
1911.95:415:36
2011.95:415:37
2111.95:425:37
2211.95:425:37
2311.95:435:38
2411.95:435:38
2511.95:435:39
2611.95:445:39
2711.95:445:40
2811.95:455:40
2911.95:455:41
3011.95:465:41
3111.95:465:42

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 4.89 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 4.89 kWh/m² to a high of 6.16 kWh/m² in September across the year — December's 4.89 kWh/m² sits near the bottom.

0246151015202531
Solar energy (kWh/m²)Level
15.0Bright
25.0Bright
35.0Bright
45.0Bright
55.0Bright
65.0Bright
75.0Bright
85.0Bright
95.0Bright
105.0Bright
115.0Bright
125.0Bright
135.0Bright
145.0Bright
155.0Bright
164.9Bright
174.9Bright
184.9Bright
194.9Bright
204.9Bright
214.9Bright
224.9Bright
234.9Bright
244.9Bright
254.9Bright
264.9Bright
274.9Bright
284.9Bright
294.9Bright
304.9Bright
314.9Bright
Planning a trip in December

Is December a good time to visit Tomohon?

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

3.1
Sightseeing
10th-best month of the year
3.6
Beach & pool
12th-best month of the year

December is a weaker month for outdoor sightseeing in Tomohon.

What to pack for Tomohon in December

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

In December, Tomohon sees daytime highs around 28°C and nights near 22°C. Pack light clothes and rain gear. Worth having: sun protection. About 30 days see rain.

light clothesrain gearsun protection

Sea temperature near Tomohon in December

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

The sea at the nearest coast (about 21 km away) is warmest in June at about 30°C and coldest in February 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
Mar29Tropical
Apr29Tropical
May30Tropical
Jun30Tropical
Jul29Tropical
Aug29Tropical
Sep29Tropical
Oct30Tropical
Nov29Tropical
Dec29Tropical

UV index in Tomohon in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December 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 Tomohon peaks around March 12 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 19 at about 11 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 12UV 15Nov 19UV 11
UV index (midday)Level
Jan14Extreme
Feb15Extreme
Mar15Extreme
Apr14Extreme
May12Extreme
Jun12Extreme
Jul12Extreme
Aug13Extreme
Sep14Extreme
Oct14Extreme
Nov11Extreme
Dec12Extreme
Location & terrain

Where is Tomohon?

Tomohon sits at 1.3°N, 124.8°E, 734 m above sea level, in Indonesia. The nearest listed city is Tondano, 12 km away.

TernateSofifiLuwuk

Topography around Tomohon

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

Within 3 km, the terrain around Tomohon has significant variations in elevation — a maximum elevation change of 490 m around an average of 719 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,565 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,962 m.

The land around Tomohon is covered by trees (80%) within 3 km, trees (79%) within 16 km, and water (65%) and trees (32%) within 80 km.

3 km
490 m
16 km
1,565 m
80 km
1,962 m
treesgrasslandcroplandartificial surfaceswater
December weather nearby: Tondano 12 km · Manado 19 km · Bitung 39 km · Gorontalo 212 km · Tahuna 266 km · Ternate 293 km · Sofifi 313 km · Luwuk 337 km

Indonesia travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 29% of US
price level, 2025
GDP per capita
$5,060
2025
Happiness
5.6 / 10
World Happiness, 2025
Safe drinking water
30%
of population, 2024
Homicide rate
0.3
per 100k, 2022
Road deaths
11.3
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Low
EF EPI 471
Religion
Muslim 87%Protestant 8%Roman Catholic 3%Hindu 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 Tomohon (1.3168°, 124.8038°, elevation 734 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).