Donsol weather in September

In September, Donsol sees average daytime highs of 30°C and overnight lows near 26°C, with 316 mm of rain across 27.6 wet days and about 12.1 hours of daylight. It is the 8th-warmest and 2nd-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 Donsol's 11th-clearest and 8th-windiest month. For the whole year in context, see Donsol's year-round climate.

Daytime high
30°
8th warmest
Overnight low
26°
8th coldest
Rainfall
316 mm
27.6 wet days
Daylight
12 h 06 min
5:38 AM – 5:42 PM
Cloud cover
88%
11th clearest
Wind
12 km/h
8th windiest
Solar energy
4.84 kWh/m²
Travel score
2.8
out of 10

Donsol is municipality of the Philippines in the province of Sorsogon.

Density
40/km²
people per km²
Founded
1668

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 Donsol reaches about 30°C in the afternoon and slips back to 26°C overnight — a 4°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.

20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13026
23026
33026
43026
53026
63026
73026
83026
93026
103026
113026
123026
133026
143026
153026
163026
173026
183026
193026
203026
213026
223026
233026
243026
253026
263026
273026
283026
293026
303026

How September really feels in Donsol

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.

Donsol weather by month

How September compares with the rest of the year at a glance. September is the 8th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 24°9811.811.35.3
Feb29° / 24°677.711.65.5
Mar30° / 25°57911.95.1
Apr31° / 25°507.812.34.5
May31° / 26°15719.312.63.4
Jun31° / 26°2442612.72.8
Jul30° / 26°3632912.72.7
Aug30° / 26°29827.312.42.9
Sep30° / 26°31627.612.12.8
Oct30° / 25°22224.111.73.3
Nov30° / 25°13916.311.44.2
Dec29° / 25°1631611.34.7

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 7% of September, with mostly cloudy or overcast conditions the remaining 91%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
11486
21387
31288
41288
51288
61189
71189
81090
91090
10991
11892
12892
13793
14793
15793
16694
17694
18694
19694
20892
21892
22892
23892
24991
25991
261090
271090
281288
291288
301387

Chance of precipitation in September

Any precipitation

Donsol gets around 316 mm of rain over 27.6 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 92% and peaks near 94% on the wettest days.

0%20%40%60%80%100%151015202530
Rain chance (%)
189
289
389
489
590
690
791
891
992
1092
1193
1293
1393
1494
1594
1694
1794
1894
1994
2094
2194
2293
2393
2492
2592
2692
2791
2891
2990
3090

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 99% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Oppressive (%)Miserable (%)
10100
20100
30100
40100
50100
60100
70100
80100
90100
100100
11199
12199
13199
14199
15199
16199
17199
18199
19199
20298
21298
22298
23298
24298
25298
26298
27397
28397
29397
30397

Wind in September

Winds average 12 km/h in September.

Across September, daily wind ranges from about 11 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
112calm
212calm
312calm
412calm
512calm
612calm
712calm
812calm
912calm
1012calm
1112calm
1212light breeze
1312light breeze
1412light breeze
1512light breeze
1612light breeze
1712light breeze
1812light breeze
1912calm
2012calm
2112calm
2212calm
2312calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm

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 5:38 AM to 5:38 AM, and sunset from 5:53 PM to 5:32 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.35:385:53
212.25:385:52
312.25:385:52
412.25:385:51
512.25:385:50
612.25:385:49
712.25:385:49
812.25:385:48
912.25:385:47
1012.15:385:46
1112.15:385:46
1212.15:385:45
1312.15:385:44
1412.15:385:44
1512.15:385:43
1612.15:385:42
1712.15:385:41
1812.05:385:41
1912.05:385:40
2012.05:385:39
2112.05:385:38
2212.05:385:38
2312.05:385:37
2412.05:385:36
2512.05:385:35
2611.95:385:35
2711.95:385:34
2811.95:385:33
2911.95:385:33
3011.95:385:32

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.84 kWh/m².

For context, solar energy here swings from a low near 4.02 kWh/m² to a high of 6.4 kWh/m² in April across the year — September's 4.84 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
124.9Bright
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
274.8Bright
284.8Bright
294.8Bright
304.8Bright
Planning a trip in September

Hazard calendar for Donsol

In seasonPeak

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

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

Donsol's rainy season runs June–October, when most of the year's rain falls.

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

Is September a good time to visit Donsol?

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

2.8
Sightseeing
10th-best month of the year
3.8
Beach & pool
11th-best month of the year

September is a weaker month for outdoor sightseeing in Donsol.

What to pack for Donsol in September

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

In September, Donsol sees daytime highs around 30°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 Donsol 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°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan26Warm
Feb26Warm
Mar27Warm
Apr28Warm
May29Tropical
Jun30Tropical
Jul29Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov28Tropical
Dec27Warm

UV index in Donsol 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 Donsol peaks around April 16 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 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 highApr 16UV 14Dec 15UV 9
UV index (midday)Level
Jan10Extreme
Feb12Extreme
Mar13Extreme
Apr14Extreme
May13Extreme
Jun13Extreme
Jul12Extreme
Aug14Extreme
Sep13Extreme
Oct11Extreme
Nov10Very high
Dec9Very high

Air quality in Donsol 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 Donsol is worst in July — around 20 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (April, 9 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateGoodJul 1720 µg/m³Apr 169 µg/m³
PM2.5 (µg/m³)Level
Jan14Moderate
Feb17Moderate
Mar11Good
Apr9Good
May11Good
Jun16Moderate
Jul20Moderate
Aug17Moderate
Sep18Moderate
Oct17Moderate
Nov12Good
Dec12Good
Location & terrain

Where is Donsol?

Donsol sits at 12.9°N, 123.6°E, 0 m above sea level, in Philippines. The nearest listed city is Legaspi, 31 km away.

Topography around Donsol

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

Within 3 km, the terrain around Donsol has only modest variations in elevation — a maximum elevation change of 65 m around an average of 9 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 166 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,411 m.

The land around Donsol is covered by water (57%) and trees (36%) within 3 km, water (58%) and trees (38%) within 16 km, and water (62%) and trees (31%) within 80 km.

3 km
65 m
16 km
166 m
80 km
2,411 m
treesgrasslandcroplandartificial surfaceswatermangroves
September weather nearby: Legaspi 31 km · Tagas 32 km · Bulan 40 km · Oas 41 km · Sorsogon 44 km · Polangui 45 km · Libon 47 km · Malilipot 49 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 Donsol (12.9055°, 123.5949°, elevation 0 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).