Waisai weather in December

In December, Waisai sees average daytime highs of 28°C and overnight lows near 25°C, with 266 mm of rain across 28.6 wet days and about 12 hours of daylight. It is the 1st-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 miserable.

Daylight stretches from about 12 hours at the start of December to 12 hours by month's end. Set against the rest of the year, December is Waisai's 10th-clearest and 9th-windiest month. For the whole year in context, see Waisai's year-round climate.

Daytime high
28°
1st warmest
Overnight low
25°
11th coldest
Rainfall
266 mm
28.6 wet days
Daylight
12 hours
6:14 AM – 6:15 PM
Cloud cover
88%
10th clearest
Wind
8 km/h
9th windiest
Solar energy
5.11 kWh/m²
Travel score
3.2
out of 10

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 Waisai reaches about 28°C in the afternoon and slips back to 25°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 29°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)
12825
22825
32825
42825
52825
62825
72825
82825
92825
102825
112825
122825
132825
142825
152825
162825
172825
182825
192825
202825
212825
222825
232825
242825
252825
262825
272825
282825
292825
302825
312825

How December really feels in Waisai

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
31
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

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

Waisai weather by month

How December compares with the rest of the year at a glance. December is the 1st-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 25°24626.6123.6
Feb28° / 25°19323.3123.7
Mar28° / 25°25826.4123.5
Apr28° / 25°28627.6123.3
May28° / 26°27427.1123.5
Jun28° / 25°27925124.0
Jul27° / 25°23123.4124.3
Aug27° / 25°16919.2124.9
Sep28° / 25°18521.2124.5
Oct28° / 25°20022.8124.1
Nov28° / 25°22026.1123.5
Dec28° / 25°26628.6123.2

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 1% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 7% of December, with mostly cloudy or overcast conditions the remaining 91%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
11288
21189
31189
41189
51189
61288
71288
81288
91288
101288
111189
121189
131189
14991
15991
16991
17892
18892
19793
20793
21595
22595
23595
24595
25595
26595
27694
28694
29694
30694
31793

Chance of precipitation in December

Any precipitation

Waisai gets around 266 mm of rain over 28.6 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 92% and peaks near 93% on the wettest days.

0%20%40%60%80%100%151015202531
Rain chance (%)
191
291
391
491
592
692
792
892
992
1092
1192
1292
1392
1493
1593
1693
1793
1893
1993
2093
2193
2293
2393
2493
2593
2692
2792
2891
2991
3090
3190

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 60% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Oppressive (%)Miserable (%)
13664
23664
33763
43763
53862
63862
73862
83961
93961
103961
113961
123961
133961
143961
153961
163961
173961
184060
194060
204060
214060
224159
234159
244258
254357
264456
274456
284555
294753
304852
314951

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 8 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm
318calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 12 hours at the start of December to 12 hours by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 0 minutes over December. Sunrise moves from 6:07 AM to 6:21 AM, and sunset from 6:08 PM to 6:22 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.06:076:08
212.06:086:08
312.06:086:09
412.06:096:09
512.06:096:10
612.06:096:10
712.06:106:11
812.06:106:11
912.06:116:11
1012.06:116:12
1112.06:116:12
1212.06:126:13
1312.06:126:13
1412.06:136:14
1512.06:136:14
1612.06:146:15
1712.06:146:15
1812.06:156:15
1912.06:156:16
2012.06:166:16
2112.06:166:17
2212.06:176:17
2312.06:176:18
2412.06:176:18
2512.06:186:19
2612.06:186:19
2712.06:196:20
2812.06:196:20
2912.06:206:21
3012.06:206:21
3112.06:216:22

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.11 kWh/m².

For context, solar energy here swings from a low near 4.82 kWh/m² to a high of 5.79 kWh/m² in October across the year — December's 5.11 kWh/m² sits near the bottom.

0246151015202531
Solar energy (kWh/m²)Level
15.3Bright
25.3Bright
35.3Bright
45.3Bright
55.2Bright
65.2Bright
75.2Bright
85.2Bright
95.2Bright
105.2Bright
115.2Bright
125.2Bright
135.2Bright
145.2Bright
155.2Bright
165.2Bright
175.1Bright
185.1Bright
195.1Bright
205.1Bright
215.1Bright
225.1Bright
235.1Bright
245.1Bright
255.1Bright
265.2Bright
275.2Bright
285.2Bright
295.2Bright
305.2Bright
315.3Bright
Planning a trip in December

Is December a good time to visit Waisai?

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

3.2
Sightseeing
12th-best month of the year
3.8
Beach & pool
12th-best month of the year

December is a weaker month for outdoor sightseeing in Waisai.

What to pack for Waisai in December

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

In December, Waisai sees daytime highs around 28°C and nights near 25°C. Pack light clothes and rain gear. Worth having: sun protection. About 29 days see rain.

light clothesrain gearsun protection

Sea temperature near Waisai 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 19 km away) is warmest in May at about 29°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°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan29Tropical
Feb29Tropical
Mar29Tropical
Apr29Tropical
May29Tropical
Jun29Tropical
Jul29Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov29Tropical
Dec29Tropical

UV index in Waisai 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 Waisai peaks around March 17 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 12 at about 12 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 17UV 16Jul 12UV 12
UV index (midday)Level
Jan14Extreme
Feb15Extreme
Mar16Extreme
Apr15Extreme
May12Extreme
Jun12Extreme
Jul12Extreme
Aug13Extreme
Sep14Extreme
Oct15Extreme
Nov13Extreme
Dec12Extreme
Location & terrain

Where is Waisai?

Waisai sits at 0.2°S, 130.5°E, 185 m above sea level, in Indonesia. The nearest listed city is Sorong, 110 km away.

SofifiTobeloDarubaFakfakTernateKawasi

Topography around Waisai

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

Within 3 km, the terrain around Waisai has significant variations in elevation — a maximum elevation change of 411 m around an average of 151 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 733 m; within 80 km, large variations in elevation — a maximum elevation change of 1,155 m.

The land around Waisai is covered by trees (75%) and water (23%) within 3 km, trees (66%) and water (32%) within 16 km, and water (81%) within 80 km.

3 km
411 m
16 km
733 m
80 km
1,155 m
treeswatermangroves
December weather nearby: Sorong 110 km · Teminabuan 214 km · Sofifi 345 km · Tobelo 353 km · Daruba 354 km · Fakfak 359 km · Ternate 366 km · Kawasi 376 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 Waisai (-0.2379°, 130.5072°, elevation 185 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).