Tanjay weather in December

In December, Tanjay sees average daytime highs of 28°C and overnight lows near 25°C, with 163 mm of rain across 23.2 wet days and about 11.5 hours of daylight. It is the 10th-warmest and 5th-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 15% of the time in December, and the air most often feels oppressive.

Daylight stretches from about 11 h 30 min at the start of December to 11 h 30 min by month's end. Set against the rest of the year, December is Tanjay's 7th-clearest and 3rd-windiest month. For the whole year in context, see Tanjay's year-round climate.

Daytime high
28°
10th warmest
Overnight low
25°
4th coldest
Rainfall
163 mm
23.2 wet days
Daylight
11 h 24 min
6:00 AM – 5:27 PM
Cloud cover
73%
7th clearest
Wind
11 km/h
3rd windiest
Solar energy
4.39 kWh/m²
Travel score
4.2
out of 10

Tanjay is city of the Philippines in the province of Negros Oriental.

Density
317/km²
people per km²
Founded
1580

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 Tanjay 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
302824
312824

How December really feels in Tanjay

Once humidity and wind are folded in, December averages 9 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
9
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.

Tanjay weather by month

How December compares with the rest of the year at a glance. December is the 10th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 24°11118.511.55.0
Feb28° / 24°10213.311.75.6
Mar29° / 25°9314.311.95.2
Apr30° / 25°7815.112.24.6
May30° / 26°13923.412.43.5
Jun29° / 25°19125.712.53.2
Jul29° / 25°19826.112.53.3
Aug29° / 25°16223.612.33.6
Sep29° / 25°17724.812.13.4
Oct29° / 25°19427.111.83.3
Nov29° / 25°16224.311.63.6
Dec28° / 25°16323.211.54.2

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 15% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 16% of December, with mostly cloudy or overcast conditions the remaining 68%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13367
23367
33367
43466
53466
63466
73466
83367
93367
103367
113367
123466
133367
143268
153268
163268
173169
183169
193070
202971
212971
222971
232971
243070
253070
263070
272971
283070
293070
303070
313169

Chance of precipitation in December

Any precipitation

Tanjay gets around 163 mm of rain over 23.2 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 75% and peaks near 79% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
176
276
376
476
577
677
778
878
979
1079
1179
1279
1379
1478
1578
1677
1776
1876
1975
2074
2173
2272
2371
2471
2570
2669
2769
2868
2968
3068
3168

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 76% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
116831
216930
317029
417029
517029
617128
717128
807327
907327
1007426
1107426
1207525
1307525
1407624
1507624
1607723
1707723
1807723
1917722
2017722
2117821
2217821
2327820
2427919
2527919
2637918
2738017
2838017
2938116
3048115
3148214

Wind in December

Winds average 11 km/h in December.

Across December, daily wind ranges from about 10 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
110calm
210calm
310calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1712calm
1812calm
1912calm
2012calm
2112calm
2212calm
2312light breeze
2412light breeze
2512light breeze
2612light breeze
2712light breeze
2812light breeze
2912light breeze
3013light breeze
3113light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 11 h 30 min at the start of December to 11 h 30 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 5:53 AM to 6:07 AM, and sunset from 5:22 PM to 5:34 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.55:535:22
211.55:535:22
311.55:545:22
411.55:545:23
511.55:555:23
611.55:555:23
711.55:565:23
811.55:565:24
911.55:575:24
1011.55:575:25
1111.55:585:25
1211.55:585:25
1311.55:595:26
1411.55:595:26
1511.46:005:27
1611.46:005:27
1711.46:015:27
1811.46:015:28
1911.46:025:28
2011.46:025:29
2111.46:035:29
2211.46:035:30
2311.46:035:30
2411.46:045:31
2511.46:045:31
2611.46:055:32
2711.46:055:32
2811.46:065:33
2911.46:065:33
3011.56:075:34
3111.56:075:34

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 4.39 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 4.39 kWh/m² to a high of 6.3 kWh/m² in April across the year — December's 4.39 kWh/m² sits near the bottom.

024151015202531
Solar energy (kWh/m²)Level
14.5Bright
24.5Bright
34.5Bright
44.5Bright
54.5Bright
64.5Bright
74.5Bright
84.4Bright
94.4Bright
104.4Bright
114.4Bright
124.4Bright
134.4Bright
144.4Bright
154.4Bright
164.4Bright
174.4Bright
184.4Bright
194.4Bright
204.4Bright
214.4Bright
224.4Bright
234.4Bright
244.4Bright
254.4Bright
264.4Bright
274.4Bright
284.4Bright
294.5Bright
304.5Bright
314.5Bright
Planning a trip in December

Hazard calendar for Tanjay

In seasonPeak

In December, Tanjay sits inside its pacific typhoon season. The full year is below, with each hazard's peak months called out.

Tanjay sits in the Pacific typhoon belt; the season peaks July–October.

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

Is December a good time to visit Tanjay?

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

4.2
Sightseeing
5th-best month of the year
4.7
Beach & pool
6th-best month of the year

December is a reasonable time to visit Tanjay for sightseeing.

What to pack for Tanjay in December

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

In December, Tanjay sees daytime highs around 28°C and nights near 25°C. Pack light clothes and rain gear. About 23 days see rain.

light clothesrain gear

Sea temperature near Tanjay in December

The nearest coast averages about 28°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 27 km away) is warmest in June at about 30°C and coldest in February near 27°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
Jan27Warm
Feb27Warm
Mar28Warm
Apr28Tropical
May29Tropical
Jun30Tropical
Jul29Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov29Tropical
Dec28Tropical

UV index in Tanjay in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December 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 Tanjay peaks around March 22 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 12 at about 10 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highMar 22UV 15Dec 12UV 10
UV index (midday)Level
Jan11Extreme
Feb13Extreme
Mar15Extreme
Apr14Extreme
May13Extreme
Jun12Extreme
Jul12Extreme
Aug14Extreme
Sep13Extreme
Oct12Extreme
Nov10Very high
Dec10Very high
Location & terrain

Where is Tanjay?

Tanjay sits at 9.5°N, 123.2°E, 10 m above sea level, in Philippines. The nearest listed city is Bais, 9.0 km away.

Topography around Tanjay

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

Within 3 km, the terrain around Tanjay has only modest variations in elevation — a maximum elevation change of 25 m around an average of 5 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,082 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,814 m.

The land around Tanjay is covered by water (30%), trees (25%) and cropland (25%) within 3 km, trees (44%) and water (43%) within 16 km, and water (53%) and trees (40%) within 80 km.

3 km
25 m
16 km
1,082 m
80 km
1,814 m
treesgrasslandcroplandartificial surfaceswatermangroves
December weather nearby: Bais 9.0 km · Sibulan 22 km · Dumaguete 29 km · Santa Catalina 38 km · Bayawan 42 km · Kabankalan 64 km · Guihulñgan 68 km · Suay 69 km

Philippines travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type A / B / C
230 V · 60 Hz
Prices
≈ 33% of US
price level, 2025
GDP per capita
$4,171
2025
Happiness
6.2 / 10
World Happiness, 2025
Safe drinking water
48%
of population, 2024
Homicide rate
4.3
per 100k, 2023
Road deaths
12
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
High
EF EPI 569
Religion
Roman Catholic 79%other 8%Muslim 6%other Christian 4%

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 Tanjay (9.5162°, 123.158°, elevation 10 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).