Krian weather in December

In December, Krian sees average daytime highs of 30°C and overnight lows near 23°C, with 447 mm of rain across 28.5 wet days and about 12.4 hours of daylight. It is the 6th-warmest and 4th-wettest month of the year here.

Day-to-day highs hold fairly steady near 30°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 12 h 24 min at the start of December to 12 h 24 min by month's end. Set against the rest of the year, December is Krian's 10th-clearest and 4th-windiest month. For the whole year in context, see Krian's year-round climate.

Daytime high
30°
6th warmest
Overnight low
23°
11th coldest
Rainfall
447 mm
28.5 wet days
Daylight
12 h 24 min
5:13 AM – 5:39 PM
Cloud cover
90%
10th clearest
Wind
5 km/h
4th windiest
Solar energy
4.7 kWh/m²
Travel score
2.6
out of 10

Krian is subdistrict in Sidoarjo Regency, East Java, Indonesia.

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 30°C through the month.

A typical December day in Krian reaches about 30°C in the afternoon and slips back to 23°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 32°C. Set against its neighbours, December runs about 1°C cooler than November and on par with January.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13123
23123
33123
43123
53123
63123
73123
83123
93023
103023
113023
123023
133023
143023
153023
163023
173023
183023
193023
203023
213023
223023
233023
243023
253023
263023
273023
283023
293023
303023
313023

How December really feels in Krian

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.

Krian weather by month

How December compares with the rest of the year at a glance. December is the 6th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 23°51729.612.42.7
Feb30° / 23°50227.412.22.6
Mar30° / 23°46329.312.12.7
Apr30° / 23°27924.411.83.1
May31° / 22°10915.411.74.1
Jun30° / 21°569.711.64.9
Jul30° / 21°295.711.65.3
Aug31° / 21°143.611.85.2
Sep32° / 21°314.7124.5
Oct32° / 22°11012.312.23.6
Nov32° / 23°28322.212.32.9
Dec30° / 23°44728.512.42.6

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 4% of December, with mostly cloudy or overcast conditions the remaining 94%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1991
2892
3892
4892
5892
6793
7793
8694
9694
10595
11595
12595
13595
14595
15595
16595
17595
18496
19595
20595
21595
22595
23595
24595
25595
26595
27595
28595
29694
30694
31694

Chance of precipitation in December

Any precipitation

Krian gets around 447 mm of rain over 28.5 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 (%)
188
289
389
490
590
691
791
892
992
1092
1193
1293
1393
1493
1593
1693
1793
1893
1992
2092
2192
2292
2391
2491
2591
2691
2791
2891
2992
3092
3192

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 95% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
16931
25941
35932
44942
54942
64942
74942
84942
93952
103952
113952
123952
133952
142962
152962
162962
172962
182962
192962
202971
212971
223961
233961
243961
253961
263961
273961
283961
293961
303961
313961

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

0246810151015202531
Wind speed (km/h)Feels
14calm
24calm
34calm
44calm
54calm
64calm
74calm
84calm
94calm
104calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm
315calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 12 h 24 min at the start of December to 12 h 24 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 5:07 AM to 5:20 AM, and sunset from 5:31 PM to 5:46 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.45:075:31
212.45:085:32
312.45:085:32
412.45:085:33
512.45:095:33
612.45:095:34
712.45:095:34
812.45:105:35
912.45:105:35
1012.45:115:36
1112.45:115:36
1212.45:115:37
1312.45:125:37
1412.45:125:38
1512.45:135:38
1612.45:135:39
1712.45:135:39
1812.45:145:40
1912.45:145:40
2012.45:155:41
2112.45:155:41
2212.45:165:42
2312.45:165:42
2412.45:175:43
2512.45:175:43
2612.45:185:43
2712.45:185:44
2812.45:195:44
2912.45:195:45
3012.45:205:45
3112.45:205:46

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 4.7 kWh/m².

For context, solar energy here swings from a low near 4.65 kWh/m² to a high of 6.43 kWh/m² in September across the year — December's 4.7 kWh/m² sits near the bottom.

024151015202531
Solar energy (kWh/m²)Level
14.9Bright
24.8Bright
34.8Bright
44.8Bright
54.8Bright
64.8Bright
74.7Bright
84.7Bright
94.7Bright
104.7Bright
114.7Bright
124.7Bright
134.7Bright
144.7Bright
154.7Bright
164.7Bright
174.7Bright
184.7Bright
194.7Bright
204.7Bright
214.7Bright
224.7Bright
234.7Bright
244.7Bright
254.7Bright
264.8Bright
274.8Bright
284.8Bright
294.8Bright
304.8Bright
314.8Bright
Planning a trip in December

Hazard calendar for Krian

In seasonPeak

In December, Krian sits inside its cyclone and monsoon season. The full year is below, with each hazard's peak months called out.

Krian sits in the South Indian Ocean cyclone belt; the season peaks January–March.

Krian's monsoon runs November–April, when most of the year's rain falls.

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

Is December a good time to visit Krian?

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

2.6
Sightseeing
11th-best month of the year
3.8
Beach & pool
9th-best month of the year

December is a weaker month for outdoor sightseeing in Krian.

What to pack for Krian in December

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

In December, Krian sees daytime highs around 30°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 29 days see rain.

light clothesrain gearsun protection

Sea temperature near Krian in December

The nearest coast averages about 30°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 33 km away) is warmest in November at about 30°C and coldest in August near 28°C.

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

26°28°30°32°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan29Tropical
Feb29Tropical
Mar29Tropical
Apr30Tropical
May30Tropical
Jun29Tropical
Jul28Tropical
Aug28Tropical
Sep28Tropical
Oct29Tropical
Nov30Tropical
Dec30Tropical

UV index in Krian in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Krian peaks around March 18 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 15 at about 7 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highVery highExtremeExtremeMar 18UV 13Jun 15UV 7
UV index (midday)Level
Jan12Extreme
Feb10Extreme
Mar14Extreme
Apr11Extreme
May9Very high
Jun7High
Jul9Very high
Aug11Extreme
Sep12Extreme
Oct11Extreme
Nov10Very high
Dec11Extreme

Air quality in Krian in December

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where December falls, not just the annual average.

Air quality in Krian is worst in May — around 101 µg/m³ PM2.5 (unhealthy), and holds fairly steady the rest of the year.

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0306090120JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyMay 13101 µg/m³Aug 2267 µg/m³
PM2.5 (µg/m³)Level
Jan76Unhealthy
Feb71Unhealthy
Mar87Unhealthy
Apr99Unhealthy
May101Unhealthy
Jun95Unhealthy
Jul81Unhealthy
Aug66Unhealthy
Sep69Unhealthy
Oct80Unhealthy
Nov87Unhealthy
Dec81Unhealthy
Location & terrain

Where is Krian?

Krian sits at 7.4°S, 112.6°E, 17 m above sea level, in Indonesia. The nearest listed city is Driyorejo, 7.0 km away.

Topography around Krian

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

Within 3 km, the terrain around Krian has only modest variations in elevation — a maximum elevation change of 14 m around an average of 14 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 90 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,306 m.

The land around Krian is covered by artificial surfaces (44%) and cropland (27%) within 3 km, cropland (46%) and artificial surfaces (32%) within 16 km, and trees (33%), cropland (28%) and water (26%) within 80 km.

3 km
14 m
16 km
90 m
80 km
3,306 m
treesgrasslandcroplandartificial surfaceswaterwetland
December weather nearby: Driyorejo 7.0 km · Tulangan Utara 11 km · Sidoarjo 16 km · Buduran 16 km · Gedangan 16 km · Tanggulangin 17 km · Mojokerto 17 km · Soko 19 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 Krian (-7.4104°, 112.5792°, elevation 17 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. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).