Malolos weather in September

In September, Malolos sees average daytime highs of 29°C and overnight lows near 26°C, with 309 mm of rain across 27 wet days and about 12.1 hours of daylight. It is the 8th-warmest and 3rd-wettest month of the year here.

Day-to-day highs hold fairly steady near 29°C through the month. The sky is clear or mostly clear about 6% 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 Malolos's 10th-clearest and 8th-windiest month. For the whole year in context, see Malolos's year-round climate.

Daytime high
29°
8th warmest
Overnight low
26°
7th coldest
Rainfall
309 mm
27 wet days
Daylight
12 h 06 min
5:49 AM – 5:54 PM
Cloud cover
85%
10th clearest
Wind
10 km/h
8th windiest
Solar energy
4.31 kWh/m²
Travel score
3.1
out of 10

Malolos is city of the Philippines and capital of the province of Bulacan.

Density
4,012/km²
people per km²
Founded
~950 CE

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 29°C through the month.

A typical September day in Malolos reaches about 29°C in the afternoon and slips back to 26°C overnight — a 3°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, September runs on par with August and on par with October.

25°28°30°33°35°151015202530
Avg high (°C)Avg low (°C)
12926
22926
32926
42926
52926
62926
72926
82926
92926
102926
112926
122926
132926
142926
152926
162926
172926
182926
192926
202926
212926
222926
232926
242926
252926
262926
272926
282926
292926
302926

How September really feels in Malolos

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.

Malolos weather by month

How September compares with the rest of the year at a glance. September is the 8th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 24°243.411.26.8
Feb29° / 24°20311.56.7
Mar30° / 25°213.411.95.9
Apr32° / 27°225.312.34.8
May31° / 27°14317.712.73.5
Jun30° / 27°22724.912.93.0
Jul29° / 26°36528.412.83.0
Aug29° / 26°33728.112.53.1
Sep29° / 26°3092712.13.1
Oct30° / 26°17819.111.74.0
Nov29° / 26°771011.35.3
Dec29° / 25°878.511.16.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 6% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 8% of September, with mostly cloudy or overcast conditions the remaining 87%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
11387
21288
31288
41288
51288
61288
71288
81288
91288
101288
111189
121189
131189
141189
151189
161288
171189
181189
191288
201387
211387
221585
231585
241684
251684
261783
271882
281882
292080
302080

Chance of precipitation in September

Any precipitation

Malolos gets around 309 mm of rain over 27 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 90% and peaks near 94% on the wettest days.

0%20%40%60%80%100%151015202530
Rain chance (%)
188
288
389
489
589
690
790
891
992
1092
1193
1293
1393
1494
1594
1693
1793
1893
1992
2091
2191
2290
2389
2488
2587
2686
2785
2884
2983
3082

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 82% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Oppressive (%)Miserable (%)
11783
21783
31783
41783
51783
61783
71783
81684
91684
101684
111684
121684
131684
141684
151783
161783
171783
181882
191882
201882
211981
221981
231981
242080
252080
262179
272278
282377
292476
302575

Wind in September

Winds average 10 km/h in September.

Across September, daily wind ranges from about 9 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
269calm
279calm
289calm
299calm
309calm

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 6:05 PM to 5:43 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.35:486:05
212.35:486:04
312.35:486:04
412.35:486:03
512.25:486:02
612.25:486:01
712.25:486:01
812.25:486:00
912.25:485:59
1012.25:485:58
1112.25:485:58
1212.15:485:57
1312.15:485:56
1412.15:495:55
1512.15:495:54
1612.15:495:54
1712.15:495:53
1812.15:495:52
1912.05:495:51
2012.05:495:50
2112.05:495:50
2212.05:495:49
2312.05:495:48
2412.05:495:47
2512.05:495:46
2611.95:495:46
2711.95:495:45
2811.95:495:44
2911.95:495:43
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 4.31 kWh/m².

For context, solar energy here swings from a low near 4.02 kWh/m² to a high of 6.29 kWh/m² in April across the year — September's 4.31 kWh/m² sits near the bottom.

012345151015202530
Solar energy (kWh/m²)Level
14.4Bright
24.4Bright
34.4Bright
44.4Bright
54.4Bright
64.4Bright
74.3Bright
84.3Bright
94.3Bright
104.3Bright
114.3Bright
124.3Bright
134.3Bright
144.3Bright
154.3Bright
164.3Bright
174.3Bright
184.3Bright
194.3Bright
204.3Bright
214.3Bright
224.3Bright
234.3Bright
244.3Bright
254.3Bright
264.3Bright
274.4Bright
284.4Bright
294.4Bright
304.4Bright
Planning a trip in September

Hazard calendar for Malolos

In seasonPeak

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

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

Malolos'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 September a good time to visit Malolos?

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

3.1
Sightseeing
9th-best month of the year
4.1
Beach & pool
10th-best month of the year

September is a weaker month for outdoor sightseeing in Malolos.

What to pack for Malolos in September

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

In September, Malolos sees daytime highs around 29°C and nights near 26°C. Pack light clothes and rain gear. About 27 days see rain.

light clothesrain gear

Sea temperature near Malolos 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 25 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 Malolos 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 Malolos 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 Malolos 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 Malolos 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 Malolos?

Malolos sits at 14.8°N, 120.8°E, 9 m above sea level, in Philippines. The nearest listed city is Paombong, 3.0 km away.

Topography around Malolos

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

Within 3 km, the terrain around Malolos has only modest variations in elevation — a maximum elevation change of 18 m around an average of 3 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 52 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,557 m.

The land around Malolos is covered by water (30%) and artificial surfaces (29%) within 3 km, water (48%) and cropland (22%) within 16 km, and trees (45%) and water (25%) within 80 km.

3 km
18 m
16 km
52 m
80 km
1,557 m
treesgrasslandcroplandartificial surfaceswaterwetlandmangroves
September weather nearby: Paombong 3.0 km · Balagtas 7.0 km · Plaridel 7.0 km · Pulilan 8.0 km · Guiguinto 8.0 km · Hagonoy 8.0 km · Bulacan 9.0 km · Calumpit 9.0 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 Malolos (14.8443°, 120.8104°, 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).