Sasmuan weather in September

In September, Sasmuan sees average daytime highs of 30°C and overnight lows near 24°C, with 326 mm of rain across 27.9 wet days and about 12.1 hours of daylight. It is the 7th-warmest and 3rd-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 3% of the time in September, and the air most often feels miserable.

Daylight stretches from about 12 h 18 min at the start of September to 11 h 54 min by month's end. Set against the rest of the year, September is Sasmuan's 10th-clearest and 12th-windiest month. For the whole year in context, see Sasmuan's year-round climate.

Daytime high
30°
7th warmest
Overnight low
24°
8th coldest
Rainfall
326 mm
27.9 wet days
Daylight
12 h 06 min
5:49 AM – 5:54 PM
Cloud cover
88%
10th clearest
Wind
6 km/h
12th windiest
Solar energy
4.18 kWh/m²
Travel score
2.8
out of 10

Sasmuan is municipality of the Philippines in the province of Pampanga.

Density
230/km²
people per km²

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

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

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

A typical September day in Sasmuan reaches about 30°C in the afternoon and slips back to 24°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 32°C. Set against its neighbours, September runs on par with August and on par with October.

20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13024
23024
33024
43024
53024
63024
73024
83024
93024
103024
113024
123024
133024
143024
153024
163024
173024
183024
193024
203024
213024
223024
233024
243024
253024
263024
273024
283024
293024
303024

How September really feels in Sasmuan

Once humidity and wind are folded in, September averages 30 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
30
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

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

Sasmuan weather by month

How September compares with the rest of the year at a glance. September is the 7th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 21°295.311.26.2
Feb30° / 21°294.511.55.8
Mar31° / 22°396.611.94.9
Apr33° / 23°439.412.33.8
May32° / 24°17520.812.72.8
Jun31° / 24°25326.712.92.6
Jul30° / 24°38929.812.82.7
Aug29° / 24°35829.512.52.8
Sep30° / 24°32627.912.12.8
Oct30° / 23°2012111.73.6
Nov30° / 23°981311.34.8
Dec29° / 22°889.611.15.6

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 3% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 5% of September, with mostly cloudy or overcast conditions the remaining 92%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1793
2694
3694
4694
5694
6694
7694
8694
9694
10694
11694
12793
13793
14793
15793
16793
17793
18793
19793
20892
21892
22892
23991
241090
251090
261189
271288
281387
291486
301486

Chance of precipitation in September

Any precipitation

Sasmuan gets around 326 mm of rain over 27.9 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 93% and peaks near 95% on the wettest days.

0%20%40%60%80%100%151015202530
Rain chance (%)
193
293
394
494
594
694
794
894
995
1095
1195
1295
1395
1495
1594
1694
1794
1894
1993
2093
2192
2292
2391
2491
2590
2689
2789
2888
2987
3086

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the miserable band about 66% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Oppressive (%)Miserable (%)
13169
23169
33169
43169
53268
63268
73268
83367
93367
103367
113466
123466
133466
143565
153565
163565
173565
183565
193565
203565
213466
223466
233466
243565
253565
263664
273763
283862
293961
304060

Wind in September

Winds average 6 km/h in September, the calmest month.

Across September, daily wind ranges from about 6 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 18 min at the start of September to 11 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 24 minutes over September. Sunrise moves from 5:48 AM to 5:50 AM, and sunset from 6:06 PM to 5:43 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.35:486:06
212.35:486:05
312.35:496:05
412.35:496:04
512.25:496:03
612.25:496:02
712.25:496:01
812.25:496:01
912.25:496:00
1012.25:495:59
1112.25:495:58
1212.15:495:58
1312.15:495:57
1412.15:495:56
1512.15:495:55
1612.15:495:54
1712.15:495:54
1812.15:495:53
1912.05:505:52
2012.05:505:51
2112.05:505:50
2212.05:505:50
2312.05:505:49
2412.05:505:48
2512.05:505:47
2611.95:505:46
2711.95:505:46
2811.95:505:45
2911.95:505:44
3011.95:505:43

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.18 kWh/m².

For context, solar energy here swings from a low near 4.11 kWh/m² to a high of 6.29 kWh/m² in April across the year — September's 4.18 kWh/m² sits near the bottom.

012345151015202530
Solar energy (kWh/m²)Level
14.2Bright
24.2Bright
34.2Bright
44.2Bright
54.2Bright
64.2Bright
74.2Bright
84.2Bright
94.2Bright
104.2Bright
114.2Bright
124.2Bright
134.1Bright
144.1Bright
154.1Bright
164.1Bright
174.1Bright
184.1Bright
194.1Bright
204.2Bright
214.2Bright
224.2Bright
234.2Bright
244.2Bright
254.2Bright
264.3Bright
274.3Bright
284.3Bright
294.3Bright
304.4Bright
Planning a trip in September

Hazard calendar for Sasmuan

In seasonPeak

In September, Sasmuan sits inside its pacific typhoon and monsoon season. The full year is below, with each hazard's peak months called out.

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

Sasmuan's monsoon runs May–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 September a good time to visit Sasmuan?

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

2.8
Sightseeing
8th-best month of the year
3.8
Beach & pool
10th-best month of the year

September is a weaker month for outdoor sightseeing in Sasmuan.

What to pack for Sasmuan in September

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

In September, Sasmuan sees daytime highs around 30°C and nights near 24°C. Pack light clothes and rain gear. About 28 days see rain.

light clothesrain gear

Sea temperature near Sasmuan in September

The nearest coast averages about 29°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 35 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°32°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan27Warm
Feb27Warm
Mar28Warm
Apr29Tropical
May30Tropical
Jun30Tropical
Jul29Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov28Tropical
Dec28Warm

UV index in Sasmuan in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September 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 Sasmuan 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 Sasmuan in September

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Sasmuan 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 Sasmuan?

Sasmuan sits at 14.9°N, 120.6°E, 5 m above sea level, in Philippines. The nearest listed city is Lubao, 2.0 km away.

Topography around Sasmuan

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

Within 3 km, the terrain around Sasmuan has only modest variations in elevation — a maximum elevation change of 8 m around an average of 1 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 89 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,021 m.

The land around Sasmuan is covered by water (60%) within 3 km, water (38%) and cropland (24%) within 16 km, and trees (37%) and water (30%) within 80 km.

3 km
8 m
16 km
89 m
80 km
2,021 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
September weather nearby: Lubao 2.0 km · Masantol 11 km · San Fernando 12 km · Del Pilar 13 km · Calumpit 16 km · Apalit 16 km · Bulaon 16 km · Pio 16 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 Sasmuan (14.9438°, 120.6229°, elevation 5 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).