Calaca weather in September

In September, Calaca sees average daytime highs of 29°C and overnight lows near 26°C, with 398 mm of rain across 27.5 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 4% 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 Calaca's 10th-clearest and 9th-windiest month. For the whole year in context, see Calaca's year-round climate.

Daytime high
29°
8th warmest
Overnight low
26°
7th coldest
Rainfall
398 mm
27.5 wet days
Daylight
12 h 06 min
5:49 AM – 5:53 PM
Cloud cover
87%
10th clearest
Wind
13 km/h
9th windiest
Solar energy
4.86 kWh/m²
Travel score
3.2
out of 10

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 Calaca 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 27°C and 30°C. Set against its neighbours, September runs on par with August and on par with October.

24°26°28°30°32°151015202530
Avg high (°C)Avg low (°C)
12826
22926
32926
42926
52926
62826
72826
82826
92826
102826
112826
122826
132826
142826
152826
162826
172826
182826
192826
202926
212926
222926
232926
242926
252926
262926
272926
282926
292926
302926

How September really feels in Calaca

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.

Calaca 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°253.711.37.2
Feb28° / 24°213.311.56.9
Mar29° / 25°294.611.96.2
Apr31° / 26°326.612.35.2
May30° / 27°16619.812.63.7
Jun30° / 26°27025.412.83.2
Jul29° / 26°47028.512.73.1
Aug28° / 26°4052812.53.2
Sep29° / 26°39827.512.13.2
Oct29° / 26°22021.711.73.9
Nov29° / 26°8510.811.45.3
Dec28° / 25°1098.211.26.1

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 4% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 7% of September, with mostly cloudy or overcast conditions the remaining 90%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
11090
21090
31090
41090
5991
6991
7991
8991
9991
10991
11991
12793
13793
14793
15892
16892
17892
18892
19991
201090
211189
221189
231189
241387
251387
261486
271585
281684
291783
301783

Chance of precipitation in September

Any precipitation

Calaca gets around 398 mm of rain over 27.5 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 91% and peaks near 94% on the wettest days.

0%20%40%60%80%100%151015202530
Rain chance (%)
190
289
389
490
590
690
791
891
992
1092
1192
1293
1393
1493
1594
1694
1794
1893
1993
2093
2192
2292
2392
2491
2591
2690
2790
2889
2989
3088

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 75% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Oppressive (%)Miserable (%)
12377
22377
32377
42377
52377
62377
72278
82278
92278
102278
112278
122278
132377
142377
152377
162476
172476
182476
192575
202575
212674
222674
232773
242773
252872
262971
273070
283169
293268
303367

Wind in September

Winds average 13 km/h in September.

Across September, daily wind ranges from about 12 km/h on the calmest days to 14 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
114light breeze
214light breeze
313light breeze
413light breeze
513light breeze
613light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2312light breeze
2412light breeze
2512light breeze
2612light breeze
2712calm
2812calm
2912calm
3012calm

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 5:49 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
312.25:486:03
412.25:486:02
512.25:486:02
612.25:486:01
712.25:496:00
812.25:495:59
912.25:495:59
1012.25:495:58
1112.15:495:57
1212.15:495:56
1312.15:495:56
1412.15:495:55
1512.15:495:54
1612.15:495:53
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
3011.95:495:43

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.86 kWh/m².

For context, solar energy here swings from a low near 4.22 kWh/m² to a high of 6.75 kWh/m² in April across the year — September's 4.86 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.0Bright
25.0Bright
35.0Bright
45.0Bright
55.0Bright
65.0Bright
75.0Bright
84.9Bright
94.9Bright
104.9Bright
114.9Bright
124.8Bright
134.8Bright
144.8Bright
154.8Bright
164.8Bright
174.8Bright
184.8Bright
194.8Bright
204.8Bright
214.8Bright
224.8Bright
234.8Bright
244.8Bright
254.8Bright
264.8Bright
274.9Bright
284.9Bright
294.9Bright
304.9Bright
Planning a trip in September

Hazard calendar for Calaca

In seasonPeak

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

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

Calaca'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 Calaca?

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

3.2
Sightseeing
9th-best month of the year
3.9
Beach & pool
10th-best month of the year

September is a weaker month for outdoor sightseeing in Calaca.

What to pack for Calaca in September

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

In September, Calaca sees daytime highs around 29°C and nights near 26°C. Pack light clothes and rain gear. Worth having: sun protection. About 28 days see rain.

light clothesrain gearsun protection

Sea temperature near Calaca 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 offshore is warmest in June at about 30°C and coldest in February near 26°C.

The water stays above 20°C all year — warm enough for a swim any month.

24°26°28°30°32°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan27Warm
Feb26Warm
Mar27Warm
Apr28Tropical
May29Tropical
Jun30Tropical
Jul29Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov28Tropical
Dec28Warm

UV index in Calaca in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Calaca peaks around August 18 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 22 at about 9 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highAug 18UV 14Nov 22UV 9
UV index (midday)Level
Jan10Very high
Feb11Extreme
Mar12Extreme
Apr13Extreme
May12Extreme
Jun12Extreme
Jul12Extreme
Aug14Extreme
Sep13Extreme
Oct11Extreme
Nov9Very high
Dec9Very high

Air quality in Calaca 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 Calaca is worst in September — around 44 µg/m³ PM2.5 (poor), about 1.9× the cleanest month (February, 23 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateSep 2244 µg/m³Feb 1323 µg/m³
PM2.5 (µg/m³)Level
Jan25Moderate
Feb23Moderate
Mar26Moderate
Apr27Moderate
May32Moderate
Jun43Poor
Jul38Poor
Aug35Moderate
Sep44Poor
Oct43Poor
Nov30Moderate
Dec26Moderate
Location & terrain

Where is Calaca?

Calaca sits at 13.9°N, 120.8°E, 24 m above sea level, in Philippines. The nearest listed city is Balayan, 9.0 km away.

Topography around Calaca

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

Within 3 km, the terrain around Calaca has only modest variations in elevation — a maximum elevation change of 137 m around an average of 32 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 763 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,539 m.

The land around Calaca is covered by trees (41%) and water (25%) within 3 km, trees (41%) and water (37%) within 16 km, and water (53%) and trees (35%) within 80 km.

3 km
137 m
16 km
763 m
80 km
2,539 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Balayan 9.0 km · Taal 13 km · Tagaytay 22 km · Calatagan 23 km · Mendez-Nuñez 24 km · Nasugbu 25 km · Cuenca 26 km · Bauan 26 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 Calaca (13.9324°, 120.8133°, elevation 24 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).