San Simon weather in January

In January, San Simon sees average daytime highs of 30°C and overnight lows near 22°C, with 26 mm of rain across 3.1 wet days and about 11.2 hours of daylight. It is the 12th-warmest and 10th-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 34% of the time in January, and the air most often feels oppressive.

Daylight stretches from about 11 h 06 min at the start of January to 11 h 18 min by month's end. Set against the rest of the year, January is San Simon's 4th-clearest and 2nd-windiest month. For the whole year in context, see San Simon's year-round climate.

Daytime high
30°
12th warmest
Overnight low
22°
2nd coldest
Rainfall
26 mm
3.1 wet days
Daylight
11 h 12 min
6:30 AM – 5:42 PM
Cloud cover
54%
4th clearest
Wind
10 km/h
2nd windiest
Solar energy
4.58 kWh/m²
Travel score
6.0
out of 10

San Simon is municipality of the Philippines in the province of Pampanga.

Density
506/km²
people per km²
Founded
1771

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 30°C through the month.

A typical January day in San Simon reaches about 30°C in the afternoon and slips back to 22°C overnight — a 7°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, January runs on par with December and about 1°C cooler than February.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12923
22923
32923
42923
52923
62923
73023
83023
93023
103022
113022
123022
133022
143022
153022
163022
173022
183022
193022
203022
213022
223022
233022
243022
253022
263022
273022
283022
293022
303022
313022

How January really feels in San Simon

Once humidity and wind are folded in, January 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 January is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

San Simon weather by month

How January compares with the rest of the year at a glance. January is the 12th-warmest and 10th-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 January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 34% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 26% of January, with mostly cloudy or overcast conditions the remaining 40%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15743
25743
35842
45842
55941
65941
75941
85941
95941
105941
115941
125842
135842
145941
155941
165941
175941
186040
195941
206040
216139
226139
236238
246238
256238
266238
276337
286337
296337
306337
316337

Chance of precipitation in January

Any precipitation

San Simon gets around 26 mm of rain over 3.1 wet days in January. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 11% and peaks near 13% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
113
212
312
411
510
610
79
89
99
109
1110
1210
1311
1411
1511
1612
1712
1812
1912
2012
2112
2212
2312
2412
2512
2611
2711
2811
2911
3011
3111

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, January lands in the oppressive band about 58% of days. Sticky, muggy-or-worse air turns up on roughly 97% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1133633
2134632
3134632
4135622
5135631
6236611
7236611
8237601
9237610
10237610
11237610
12337600
13337600
14337600
15337600
16337600
17338590
18338581
19338581
20439561
21439561
22439561
23440551
24440551
25440551
26441541
27441541
28442531
29442531
30442531
31442531

Wind in January

Winds average 10 km/h in January.

Across January, 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 January

DaylightNight

Daylight runs from about 11 h 06 min at the start of January to 11 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 12 minutes over January. Sunrise moves from 6:26 AM to 6:30 AM, and sunset from 5:34 PM to 5:50 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.16:265:34
211.16:275:34
311.16:275:35
411.16:275:35
511.16:285:36
611.16:285:37
711.16:285:37
811.26:295:38
911.26:295:38
1011.26:295:39
1111.26:295:39
1211.26:295:40
1311.26:305:40
1411.26:305:41
1511.26:305:42
1611.26:305:42
1711.26:305:43
1811.26:305:43
1911.26:315:44
2011.26:315:44
2111.26:315:45
2211.26:315:45
2311.36:315:46
2411.36:315:47
2511.36:315:47
2611.36:315:48
2711.36:315:48
2811.36:315:49
2911.36:315:49
3011.36:305:50
3111.36:305:50

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 4.58 kWh/m².

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 — January's 4.58 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.3Bright
24.4Bright
34.4Bright
44.4Bright
54.4Bright
64.4Bright
74.4Bright
84.4Bright
94.5Bright
104.5Bright
114.5Bright
124.5Bright
134.5Bright
144.5Bright
154.5Bright
164.5Bright
174.5Bright
184.5Bright
194.5Bright
204.6Bright
214.6Bright
224.6Bright
234.6Bright
244.6Bright
254.7Bright
264.7Bright
274.7Bright
284.7Bright
294.7Bright
304.7Bright
314.8Bright
Planning a trip in January

Hazard calendar for San Simon

In seasonPeak

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

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

San Simon'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 January a good time to visit San Simon?

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

6.0
Sightseeing
1st-best month of the year
8.0
Beach & pool
1st-best month of the year

January is a reasonable time to visit San Simon for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for San Simon in January

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

In January, San Simon sees daytime highs around 30°C and nights near 22°C. Pack light clothes. Worth having: sun protection. About 3 days see rain.

light clothessun protection

Sea temperature near San Simon in January

The nearest coast averages about 27°C in January — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 43 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 San Simon in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January 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 San Simon 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 San Simon in January

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in San Simon 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 San Simon?

San Simon sits at 15.0°N, 120.8°E, 11 m above sea level, in Philippines. The nearest listed city is San Luis, 5.0 km away.

Topography around San Simon

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

Within 3 km, the terrain around San Simon has only modest variations in elevation — a maximum elevation change of 16 m around an average of 3 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 35 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,653 m.

The land around San Simon is covered by cropland (58%) within 3 km, cropland (47%) within 16 km, and trees (43%), cropland (22%) and water (20%) within 80 km.

3 km
16 m
16 km
35 m
80 km
1,653 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
January weather nearby: San Luis 5.0 km · Apalit 5.0 km · Calumpit 9.0 km · Del Pilar 10 km · Mexico 10 km · Santa Ana 11 km · San Fernando 11 km · Candaba 12 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 San Simon (14.9996°, 120.7808°, elevation 11 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).