Bitung weather in December

In December, Bitung sees average daytime highs of 29°C and overnight lows near 26°C, with 172 mm of rain across 25.8 wet days and about 11.9 hours of daylight. It is the 6th-warmest and 5th-wettest month of the year here.

Day-to-day highs hold fairly steady near 29°C through the month. The sky is clear or mostly clear about 4% of the time in December, and the air most often feels miserable.

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 Bitung's 11th-clearest and 8th-windiest month. For the whole year in context, see Bitung's year-round climate.

Daytime high: 29°; 6th warmest
Overnight low: 26°; 10th coldest
Rainfall: 172 mm; 25.8 wet days
Daylight: 11 h 54 min; 5:38 AM – 5:33 PM
Cloud cover: 83%; 11th clearest
Wind: 8 km/h; 8th windiest
Solar energy: 5.23 kWh/m²
Travel score: 3.5; out of 10

← November Bitung year-round climate January →Best places to visit in December

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

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 29°C through the month.

A typical December day in Bitung reaches about 29°C in the afternoon and slips back to 26°C overnight — a 3°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.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Avg high (°C)	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	28	28	28	28	28	28
Avg low (°C)	26	26	26	26	26	26	26	26	26	26	26	26	26	26	26	26	26	26	26	26	26	26	26	25	25	25	25	25	25	25	25

	Avg high (°C)	Avg low (°C)
1	29	26
2	29	26
3	29	26
4	29	26
5	29	26
6	29	26
7	29	26
8	29	26
9	29	26
10	29	26
11	29	26
12	29	26
13	29	26
14	29	26
15	29	26
16	29	26
17	29	26
18	29	26
19	29	26
20	29	26
21	29	26
22	29	26
23	29	26
24	29	25
25	29	25
26	28	25
27	28	25
28	28	25
29	28	25
30	28	25
31	28	25

How December really feels in Bitung

Once humidity and wind are folded in, December 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

heat index over the day's high

Days feeling ≤ 0°C

wind chill below the day's low

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

Bitung weather by month

How December compares with the rest of the year at a glance. December is the 6th-warmest and 5th-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	28° / 25°	178	25	11.9	3.7
Feb	28° / 25°	165	21.2	12	3.9
Mar	29° / 25°	155	22.9	12	3.9
Apr	29° / 26°	188	23.6	12	3.6
May	29° / 26°	222	25.4	12.1	3.6
Jun	29° / 25°	220	22.7	12.1	3.9
Jul	28° / 25°	146	18	12.1	4.8
Aug	28° / 25°	74	10.1	12	5.7
Sep	29° / 25°	66	11.2	12	5.3
Oct	29° / 25°	126	17.3	12	4.4
Nov	29° / 26°	164	24.7	11.9	3.4
Dec	29° / 26°	172	25.8	11.9	3.5

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 4% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 10% of December, with mostly cloudy or overcast conditions the remaining 86%.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Clearer (%)	16	15	16	16	17	17	17	17	17	16	16	16	15	15	14	14	13	13	12	11	10	10	10	10	10	11	11	11	13	13	13
Cloudier (%)	84	85	84	84	83	83	83	83	83	84	84	84	85	85	86	86	87	87	88	89	90	90	90	90	90	89	89	89	87	87	87

	Clearer (%)	Cloudier (%)
1	16	84
2	15	85
3	16	84
4	16	84
5	17	83
6	17	83
7	17	83
8	17	83
9	17	83
10	16	84
11	16	84
12	16	84
13	15	85
14	15	85
15	14	86
16	14	86
17	13	87
18	13	87
19	12	88
20	11	89
21	10	90
22	10	90
23	10	90
24	10	90
25	10	90
26	11	89
27	11	89
28	11	89
29	13	87
30	13	87
31	13	87

Chance of precipitation in December

Any precipitation

Bitung gets around 172 mm of rain over 25.8 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 83% and peaks near 84% on the wettest days.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Rain chance (%)	84	84	84	84	84	84	84	84	84	84	84	84	84	84	84	84	84	84	83	83	83	83	83	82	82	82	81	81	81	81	81

	Rain chance (%)
1	84
2	84
3	84
4	84
5	84
6	84
7	84
8	84
9	84
10	84
11	84
12	84
13	84
14	84
15	84
16	84
17	84
18	84
19	83
20	83
21	83
22	83
23	83
24	82
25	82
26	82
27	81
28	81
29	81
30	81
31	81

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the miserable band about 69% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Muggy (%)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	1	1	1	1
Oppressive (%)	27	27	27	27	27	27	27	27	27	27	27	27	27	27	28	28	28	29	30	30	31	32	33	34	35	36	37	38	39	40	41
Miserable (%)	73	73	73	73	73	73	73	73	73	73	73	73	73	73	72	72	72	71	70	70	69	68	67	66	65	64	62	61	60	59	58

	Muggy (%)	Oppressive (%)	Miserable (%)
1	0	27	73
2	0	27	73
3	0	27	73
4	0	27	73
5	0	27	73
6	0	27	73
7	0	27	73
8	0	27	73
9	0	27	73
10	0	27	73
11	0	27	73
12	0	27	73
13	0	27	73
14	0	27	73
15	0	28	72
16	0	28	72
17	0	28	72
18	0	29	71
19	0	30	70
20	0	30	70
21	0	31	69
22	0	32	68
23	0	33	67
24	0	34	66
25	0	35	65
26	0	36	64
27	1	37	62
28	1	38	61
29	1	39	60
30	1	40	59
31	1	41	58

Wind in December

Winds average 8 km/h in December.

Across December, daily wind ranges from about 7 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Wind speed (km/h)	7	7	7	7	7	8	8	8	8	8	8	8	8	8	8	8	8	9	9	9	9	9	9	9	9	9	9	9	10	10	10
Feels	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm

	Wind speed (km/h)	Feels
1	7	calm
2	7	calm
3	7	calm
4	7	calm
5	7	calm
6	8	calm
7	8	calm
8	8	calm
9	8	calm
10	8	calm
11	8	calm
12	8	calm
13	8	calm
14	8	calm
15	8	calm
16	8	calm
17	8	calm
18	9	calm
19	9	calm
20	9	calm
21	9	calm
22	9	calm
23	9	calm
24	9	calm
25	9	calm
26	9	calm
27	9	calm
28	9	calm
29	10	calm
30	10	calm
31	10	calm

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 5:32 AM to 5:45 AM, and sunset from 5:27 PM to 5:40 PM.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Daylight (h)	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9
Sunrise (AM)	5:32	5:32	5:32	5:33	5:33	5:34	5:34	5:34	5:35	5:35	5:36	5:36	5:37	5:37	5:38	5:38	5:39	5:39	5:40	5:40	5:40	5:41	5:41	5:42	5:42	5:43	5:43	5:44	5:44	5:45	5:45
Sunset (PM)	5:27	5:27	5:28	5:28	5:28	5:29	5:29	5:30	5:30	5:30	5:31	5:31	5:32	5:32	5:33	5:33	5:34	5:34	5:35	5:35	5:35	5:36	5:36	5:37	5:37	5:38	5:38	5:39	5:39	5:40	5:40

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	11.9	5:32	5:27
2	11.9	5:32	5:27
3	11.9	5:32	5:28
4	11.9	5:33	5:28
5	11.9	5:33	5:28
6	11.9	5:34	5:29
7	11.9	5:34	5:29
8	11.9	5:34	5:30
9	11.9	5:35	5:30
10	11.9	5:35	5:30
11	11.9	5:36	5:31
12	11.9	5:36	5:31
13	11.9	5:37	5:32
14	11.9	5:37	5:32
15	11.9	5:38	5:33
16	11.9	5:38	5:33
17	11.9	5:39	5:34
18	11.9	5:39	5:34
19	11.9	5:40	5:35
20	11.9	5:40	5:35
21	11.9	5:40	5:35
22	11.9	5:41	5:36
23	11.9	5:41	5:36
24	11.9	5:42	5:37
25	11.9	5:42	5:37
26	11.9	5:43	5:38
27	11.9	5:43	5:38
28	11.9	5:44	5:39
29	11.9	5:44	5:39
30	11.9	5:45	5:40
31	11.9	5:45	5:40

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.23 kWh/m².

For context, solar energy here swings from a low near 5.14 kWh/m² to a high of 6.37 kWh/m² in September across the year — December's 5.23 kWh/m² sits near the bottom.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Solar energy (kWh/m²)	5.4	5.4	5.4	5.4	5.4	5.3	5.3	5.3	5.3	5.3	5.3	5.3	5.3	5.3	5.3	5.3	5.3	5.3	5.2	5.2	5.2	5.2	5.2	5.2	5.2	5.2	5.2	5.2	5.2	5.2	5.2
Level	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright

	Solar energy (kWh/m²)	Level
1	5.4	Bright
2	5.4	Bright
3	5.4	Bright
4	5.4	Bright
5	5.4	Bright
6	5.3	Bright
7	5.3	Bright
8	5.3	Bright
9	5.3	Bright
10	5.3	Bright
11	5.3	Bright
12	5.3	Bright
13	5.3	Bright
14	5.3	Bright
15	5.3	Bright
16	5.3	Bright
17	5.3	Bright
18	5.3	Bright
19	5.2	Bright
20	5.2	Bright
21	5.2	Bright
22	5.2	Bright
23	5.2	Bright
24	5.2	Bright
25	5.2	Bright
26	5.2	Bright
27	5.2	Bright
28	5.2	Bright
29	5.2	Bright
30	5.2	Bright
31	5.2	Bright

Planning a trip in December

Is December a good time to visit Bitung?

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

3.5

Sightseeing

11th-best month of the year

4.3

Beach & pool

12th-best month of the year

December is a weaker month for outdoor sightseeing in Bitung.

What to pack for Bitung in December

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

In December, Bitung sees daytime highs around 29°C and nights near 26°C. Pack light clothes and rain gear. Worth having: sun protection. About 26 days see rain.

light clothesrain gearsun protection

Sea temperature near Bitung 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 offshore is warmest in May at about 29°C and coldest in August near 28°C.

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

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Sea temperature (°C)	29	29	29	29	29	29	28	28	28	29	29	29
Comfort	Tropical	Tropical	Tropical	Tropical	Tropical	Tropical	Tropical	Warm	Tropical	Tropical	Tropical	Tropical

	Sea temperature (°C)	Comfort
Jan	29	Tropical
Feb	29	Tropical
Mar	29	Tropical
Apr	29	Tropical
May	29	Tropical
Jun	29	Tropical
Jul	28	Tropical
Aug	28	Warm
Sep	28	Tropical
Oct	29	Tropical
Nov	29	Tropical
Dec	29	Tropical

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

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

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	14	15	15	14	12	12	11	12	13	13	12	12
Level	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme

	UV index (midday)	Level
Jan	14	Extreme
Feb	15	Extreme
Mar	15	Extreme
Apr	14	Extreme
May	12	Extreme
Jun	12	Extreme
Jul	11	Extreme
Aug	12	Extreme
Sep	13	Extreme
Oct	13	Extreme
Nov	12	Extreme
Dec	12	Extreme

Location & terrain

Where is Bitung?

Bitung sits at 1.4°N, 125.1°E, 21 m above sea level, in Indonesia. The nearest listed city is Tondano, 28 km away.

Topography around Bitung

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

Within 3 km, the terrain around Bitung has significant variations in elevation — a maximum elevation change of 252 m around an average of 58 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,978 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,962 m.

The land around Bitung is covered by trees (41%), artificial surfaces (26%) and water (24%) within 3 km, trees (60%) and water (33%) within 16 km, and water (72%) and trees (25%) within 80 km.

3 km

252 m

trees 41%

16 km

1,978 m

trees 60%

80 km

1,962 m

water 72%

treesgrasslandcroplandartificial surfaceswater

← November Bitung year-round climate January →Best places to visit in December

December weather nearby: Tondano 28 km · Manado 31 km · Tomohon 39 km · Tahuna 245 km · Gorontalo 251 km · Ternate 261 km · Sofifi 281 km · Tobelo 322 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

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 Bitung (1.4406°, 125.1282°, elevation 21 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).

	Avg high (°C)	Avg low (°C)
1	29	26
2	29	26
3	29	26
4	29	26
5	29	26
6	29	26
7	29	26
8	29	26
9	29	26
10	29	26
11	29	26
12	29	26
13	29	26
14	29	26
15	29	26
16	29	26
17	29	26
18	29	26
19	29	26
20	29	26
21	29	26
22	29	26
23	29	26
24	29	25
25	29	25
26	28	25
27	28	25
28	28	25
29	28	25
30	28	25
31	28	25

	Clearer (%)	Cloudier (%)
1	16	84
2	15	85
3	16	84
4	16	84
5	17	83
6	17	83
7	17	83
8	17	83
9	17	83
10	16	84
11	16	84
12	16	84
13	15	85
14	15	85
15	14	86
16	14	86
17	13	87
18	13	87
19	12	88
20	11	89
21	10	90
22	10	90
23	10	90
24	10	90
25	10	90
26	11	89
27	11	89
28	11	89
29	13	87
30	13	87
31	13	87

	Rain chance (%)
1	84
2	84
3	84
4	84
5	84
6	84
7	84
8	84
9	84
10	84
11	84
12	84
13	84
14	84
15	84
16	84
17	84
18	84
19	83
20	83
21	83
22	83
23	83
24	82
25	82
26	82
27	81
28	81
29	81
30	81
31	81

	Muggy (%)	Oppressive (%)	Miserable (%)
1	0	27	73
2	0	27	73
3	0	27	73
4	0	27	73
5	0	27	73
6	0	27	73
7	0	27	73
8	0	27	73
9	0	27	73
10	0	27	73
11	0	27	73
12	0	27	73
13	0	27	73
14	0	27	73
15	0	28	72
16	0	28	72
17	0	28	72
18	0	29	71
19	0	30	70
20	0	30	70
21	0	31	69
22	0	32	68
23	0	33	67
24	0	34	66
25	0	35	65
26	0	36	64
27	1	37	62
28	1	38	61
29	1	39	60
30	1	40	59
31	1	41	58

	Avg high (°C)	Avg low (°C)
1	29	26
2	29	26
3	29	26
4	29	26
5	29	26
6	29	26
7	29	26
8	29	26
9	29	26
10	29	26
11	29	26
12	29	26
13	29	26
14	29	26
15	29	26
16	29	26
17	29	26
18	29	26
19	29	26
20	29	26
21	29	26
22	29	26
23	29	26
24	29	25
25	29	25
26	28	25
27	28	25
28	28	25
29	28	25
30	28	25
31	28	25

	Clearer (%)	Cloudier (%)
1	16	84
2	15	85
3	16	84
4	16	84
5	17	83
6	17	83
7	17	83
8	17	83
9	17	83
10	16	84
11	16	84
12	16	84
13	15	85
14	15	85
15	14	86
16	14	86
17	13	87
18	13	87
19	12	88
20	11	89
21	10	90
22	10	90
23	10	90
24	10	90
25	10	90
26	11	89
27	11	89
28	11	89
29	13	87
30	13	87
31	13	87

	Rain chance (%)
1	84
2	84
3	84
4	84
5	84
6	84
7	84
8	84
9	84
10	84
11	84
12	84
13	84
14	84
15	84
16	84
17	84
18	84
19	83
20	83
21	83
22	83
23	83
24	82
25	82
26	82
27	81
28	81
29	81
30	81
31	81

	Muggy (%)	Oppressive (%)	Miserable (%)
1	0	27	73
2	0	27	73
3	0	27	73
4	0	27	73
5	0	27	73
6	0	27	73
7	0	27	73
8	0	27	73
9	0	27	73
10	0	27	73
11	0	27	73
12	0	27	73
13	0	27	73
14	0	27	73
15	0	28	72
16	0	28	72
17	0	28	72
18	0	29	71
19	0	30	70
20	0	30	70
21	0	31	69
22	0	32	68
23	0	33	67
24	0	34	66
25	0	35	65
26	0	36	64
27	1	37	62
28	1	38	61
29	1	39	60
30	1	40	59
31	1	41	58

	Avg high (°C)	Avg low (°C)
1	29	26
2	29	26
3	29	26
4	29	26
5	29	26
6	29	26
7	29	26
8	29	26
9	29	26
10	29	26
11	29	26
12	29	26
13	29	26
14	29	26
15	29	26
16	29	26
17	29	26
18	29	26
19	29	26
20	29	26
21	29	26
22	29	26
23	29	26
24	29	25
25	29	25
26	28	25
27	28	25
28	28	25
29	28	25
30	28	25
31	28	25

	Clearer (%)	Cloudier (%)
1	16	84
2	15	85
3	16	84
4	16	84
5	17	83
6	17	83
7	17	83
8	17	83
9	17	83
10	16	84
11	16	84
12	16	84
13	15	85
14	15	85
15	14	86
16	14	86
17	13	87
18	13	87
19	12	88
20	11	89
21	10	90
22	10	90
23	10	90
24	10	90
25	10	90
26	11	89
27	11	89
28	11	89
29	13	87
30	13	87
31	13	87

	Rain chance (%)
1	84
2	84
3	84
4	84
5	84
6	84
7	84
8	84
9	84
10	84
11	84
12	84
13	84
14	84
15	84
16	84
17	84
18	84
19	83
20	83
21	83
22	83
23	83
24	82
25	82
26	82
27	81
28	81
29	81
30	81
31	81

	Muggy (%)	Oppressive (%)	Miserable (%)
1	0	27	73
2	0	27	73
3	0	27	73
4	0	27	73
5	0	27	73
6	0	27	73
7	0	27	73
8	0	27	73
9	0	27	73
10	0	27	73
11	0	27	73
12	0	27	73
13	0	27	73
14	0	27	73
15	0	28	72
16	0	28	72
17	0	28	72
18	0	29	71
19	0	30	70
20	0	30	70
21	0	31	69
22	0	32	68
23	0	33	67
24	0	34	66
25	0	35	65
26	0	36	64
27	1	37	62
28	1	38	61
29	1	39	60
30	1	40	59
31	1	41	58