Calumpit weather in December

In December, Calumpit sees average daytime highs of 30°C and overnight lows near 23°C, with 84 mm of rain across 7.3 wet days and about 11.1 hours of daylight. It is the 11th-warmest and 7th-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 33% of the time in December, and the air most often feels oppressive.

Daylight stretches from about 11 h 12 min at the start of December to 11 h 06 min by month's end. Set against the rest of the year, December is Calumpit's 5th-clearest and 1st-windiest month. For the whole year in context, see Calumpit's year-round climate.

Daytime high
30°
11th warmest
Overnight low
23°
4th coldest
Rainfall
84 mm
7.3 wet days
Daylight
11 h 06 min
6:19 AM – 5:27 PM
Cloud cover
59%
5th clearest
Wind
10 km/h
1st windiest
Solar energy
4.08 kWh/m²
Travel score
5.4
out of 10

Calumpit is municipality of the Philippines in the province of Bulacan.

Density
2,172/km²
people per km²
Founded
1571

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 Calumpit reaches about 30°C in the afternoon and slips back to 23°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 31°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)
13024
23024
33024
43024
53024
63024
73024
83024
93024
103024
113024
123024
133024
143023
153023
163023
173023
183023
193023
203023
213023
223023
233023
243023
253023
262923
272923
282923
292923
302923
312923

How December really feels in Calumpit

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.

Calumpit weather by month

How December compares with the rest of the year at a glance. December is the 11th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 22°263.111.26.0
Feb30° / 22°232.611.55.7
Mar32° / 23°293.611.94.7
Apr34° / 25°265.512.33.6
May34° / 26°13617.712.72.6
Jun32° / 26°19424.312.92.5
Jul31° / 25°32028.312.82.5
Aug31° / 25°28428.612.52.6
Sep31° / 25°27926.812.12.6
Oct31° / 25°17517.911.73.6
Nov31° / 24°799.511.34.7
Dec30° / 23°847.311.15.4

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 33% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 19% of December, with mostly cloudy or overcast conditions the remaining 48%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15446
25446
35446
45446
55545
65545
75545
85446
95446
105446
115347
125248
135347
145248
155149
165149
175050
185050
194951
204951
214951
224951
234951
244951
255050
265050
275248
285347
295446
305545
315644

Chance of precipitation in December

Any precipitation

Calumpit gets around 84 mm of rain over 7.3 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 22% and peaks near 26% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%151015202531
Rain chance (%)
123
224
324
424
524
625
725
825
925
1025
1125
1226
1325
1425
1525
1625
1724
1824
1924
2023
2123
2222
2322
2421
2520
2619
2718
2817
2916
3015
3114

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 71% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
10117316
20117415
30127315
40127414
50137314
60137314
70137413
80137413
90147313
100147412
110147412
120157411
130157411
140167410
150177310
16017749
17018739
18019738
19021718
20022717
21123697
22124696
23125686
24126685
25128665
26129655
27130654
28131644
29131644
30132643
31133633

Wind in December

Winds average 10 km/h in December, the windiest month of the year.

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

051015151015202531
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm
3110calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 11 h 12 min at the start of December to 11 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 6 minutes over December. Sunrise moves from 6:11 AM to 6:26 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)
111.26:115:22
211.26:125:22
311.26:125:22
411.26:135:23
511.26:145:23
611.26:145:23
711.16:155:24
811.16:155:24
911.16:165:24
1011.16:165:24
1111.16:175:25
1211.16:175:25
1311.16:185:26
1411.16:185:26
1511.16:195:26
1611.16:195:27
1711.16:205:27
1811.16:205:28
1911.16:215:28
2011.16:215:28
2111.16:225:29
2211.16:225:29
2311.16:235:30
2411.16:235:30
2511.16:245:31
2611.16:245:31
2711.16:255:32
2811.16:255:32
2911.16:255:33
3011.16:265:33
3111.16:265:34

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 4.08 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 4.08 kWh/m² to a high of 6.25 kWh/m² in April across the year — December's 4.08 kWh/m² sits near the bottom.

012345151015202531
Solar energy (kWh/m²)Level
14.2Bright
24.2Bright
34.2Bright
44.2Bright
54.2Bright
64.1Bright
74.1Bright
84.1Bright
94.1Bright
104.1Bright
114.1Bright
124.1Bright
134.1Bright
144.1Bright
154.1Bright
164.1Bright
174.1Bright
184.1Bright
194.1Bright
204.1Bright
214.1Bright
224.1Bright
234.2Bright
244.2Bright
254.2Bright
264.2Bright
274.2Bright
284.3Bright
294.3Bright
304.3Bright
314.3Bright
Planning a trip in December

Hazard calendar for Calumpit

In seasonPeak

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

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

Calumpit's monsoon runs June–October, when most of the year's rain falls.

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

Is December a good time to visit Calumpit?

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

5.4
Sightseeing
3rd-best month of the year
7.4
Beach & pool
4th-best month of the year

December is a reasonable time to visit Calumpit for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Calumpit in December

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

In December, Calumpit sees daytime highs around 30°C and nights near 23°C. Pack light clothes. About 7 days see rain.

light clothes

Sea temperature near Calumpit 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 34 km away) is warmest in May at about 30°C and coldest in January near 27°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
Jan27Warm
Feb27Warm
Mar28Warm
Apr29Tropical
May30Tropical
Jun30Tropical
Jul29Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov28Tropical
Dec28Warm

UV index in Calumpit in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Calumpit peaks around August 18 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 21 at about 8 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highAug 18UV 13Nov 21UV 8
UV index (midday)Level
Jan9Very high
Feb11Extreme
Mar13Extreme
Apr13Extreme
May12Extreme
Jun12Extreme
Jul12Extreme
Aug14Extreme
Sep12Extreme
Oct11Extreme
Nov8Very high
Dec9Very high

Air quality in Calumpit 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 Calumpit is worst in October — around 49 µg/m³ PM2.5 (poor), and holds fairly steady the rest of the year.

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateOct 1049 µg/m³Feb 1132 µg/m³
PM2.5 (µg/m³)Level
Jan33Moderate
Feb32Moderate
Mar36Poor
Apr39Poor
May42Poor
Jun46Poor
Jul42Poor
Aug41Poor
Sep49Poor
Oct49Poor
Nov39Poor
Dec33Moderate
Location & terrain

Where is Calumpit?

Calumpit sits at 14.9°N, 120.8°E, 9 m above sea level, in Philippines. The nearest listed city is Apalit, 4.0 km away.

Topography around Calumpit

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

Within 3 km, the terrain around Calumpit has only modest variations in elevation — a maximum elevation change of 15 m around an average of 3 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 28 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,575 m.

The land around Calumpit is covered by cropland (37%) within 3 km, water (37%) and cropland (28%) within 16 km, and trees (43%) and water (24%) within 80 km.

3 km
15 m
16 km
28 m
80 km
1,575 m
treesgrasslandcroplandartificial surfaceswaterwetland
December weather nearby: Apalit 4.0 km · Masantol 6.0 km · Pulilan 9.0 km · Malolos 9.0 km · San Simon 9.0 km · Paombong 10 km · Hagonoy 10 km · Plaridel 10 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 Calumpit (14.9164°, 120.7658°, elevation 9 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).