Bongao weather in September

In September, Bongao sees average daytime highs of 28°C and overnight lows near 27°C, with 110 mm of rain across 19.4 wet days and about 12 hours of daylight. It is the 4th-warmest and 9th-wettest month of the year here.

Day-to-day highs hold fairly steady near 28°C through the month. The sky is clear or mostly clear about 15% of the time in September, and the air most often feels oppressive.

Daylight stretches from about 12 h 06 min at the start of September to 12 hours by month's end. Set against the rest of the year, September is Bongao's 6th-clearest and 6th-windiest month. For the whole year in context, see Bongao's year-round climate.

Daytime high: 28°; 4th warmest
Overnight low: 27°; 10th coldest
Rainfall: 110 mm; 19.4 wet days
Daylight: 12 hours; 5:54 AM – 5:56 PM
Cloud cover: 73%; 6th clearest
Wind: 13 km/h; 6th windiest
Solar energy: 5.9 kWh/m²
Travel score: 4.5; out of 10

Bongao is municipality of the Philippines and capital of the province of Tawi-Tawi.

Density: 72/km²; people per km²
Founded: 1958

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

← August Bongao year-round climate October →Best places to visit in September

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 28°C through the month.

A typical September day in Bongao reaches about 28°C in the afternoon and slips back to 27°C overnight — a 2°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 29°C. Set against its neighbours, September runs on par with August and on par with October.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Avg high (°C)	28	28	28	28	28	28	28	28	28	28	28	28	28	28	28	28	28	28	28	28	28	28	28	28	28	28	28	28	28	28
Avg low (°C)	26	26	26	26	26	26	26	26	26	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27

	Avg high (°C)	Avg low (°C)
1	28	26
2	28	26
3	28	26
4	28	26
5	28	26
6	28	26
7	28	26
8	28	26
9	28	26
10	28	27
11	28	27
12	28	27
13	28	27
14	28	27
15	28	27
16	28	27
17	28	27
18	28	27
19	28	27
20	28	27
21	28	27
22	28	27
23	28	27
24	28	27
25	28	27
26	28	27
27	28	27
28	28	27
29	28	27
30	28	27

How September really feels in Bongao

Once humidity and wind are folded in, September averages 17 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

heat index over the day's high

Days feeling ≤ 0°C

wind chill below the day's low

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

Bongao weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 9th-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	27° / 26°	148	19.2	11.7	4.9
Feb	27° / 26°	86	13.4	11.8	5.6
Mar	28° / 26°	80	14.1	12	5.8
Apr	28° / 27°	85	15.2	12.1	5.2
May	28° / 27°	142	22.8	12.2	4.1
Jun	28° / 27°	155	23.1	12.3	3.9
Jul	28° / 26°	148	21.9	12.3	4.3
Aug	28° / 27°	120	20.9	12.2	4.6
Sep	28° / 27°	110	19.4	12	4.5
Oct	28° / 26°	161	23.7	11.9	4.1
Nov	28° / 26°	161	24.3	11.8	4.1
Dec	28° / 26°	153	24	11.7	4.2

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 15% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 14% of September, with mostly cloudy or overcast conditions the remaining 71%.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Clearer (%)	32	31	31	31	30	30	28	28	27	26	26	27	26	26	26	26	27	27	28	28	29	30	30	30	30	30	30	30	29	29
Cloudier (%)	68	69	69	69	70	70	72	72	73	74	74	73	74	74	74	74	73	73	72	72	71	70	70	70	70	70	70	70	71	71

	Clearer (%)	Cloudier (%)
1	32	68
2	31	69
3	31	69
4	31	69
5	30	70
6	30	70
7	28	72
8	28	72
9	27	73
10	26	74
11	26	74
12	27	73
13	26	74
14	26	74
15	26	74
16	26	74
17	27	73
18	27	73
19	28	72
20	28	72
21	29	71
22	30	70
23	30	70
24	30	70
25	30	70
26	30	70
27	30	70
28	30	70
29	29	71
30	29	71

Chance of precipitation in September

Any precipitation

Bongao gets around 110 mm of rain over 19.4 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 66% and peaks near 68% on the wettest days.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Rain chance (%)	65	65	65	65	64	64	65	65	65	65	66	66	66	66	66	66	65	65	65	65	65	65	65	65	66	66	66	67	68	68

	Rain chance (%)
1	65
2	65
3	65
4	65
5	64
6	64
7	65
8	65
9	65
10	65
11	66
12	66
13	66
14	66
15	66
16	66
17	65
18	65
19	65
20	65
21	65
22	65
23	65
24	65
25	66
26	66
27	66
28	67
29	68
30	68

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the oppressive band about 53% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Oppressive (%)	56	57	57	58	58	58	58	58	57	57	56	56	55	55	54	53	52	52	51	50	49	49	49	49	49	49	49	50	50	51
Miserable (%)	44	43	43	42	42	42	42	42	43	43	44	44	45	45	46	47	48	48	49	50	51	51	51	51	51	51	51	50	50	49

	Oppressive (%)	Miserable (%)
1	56	44
2	57	43
3	57	43
4	58	42
5	58	42
6	58	42
7	58	42
8	58	42
9	57	43
10	57	43
11	56	44
12	56	44
13	55	45
14	55	45
15	54	46
16	53	47
17	52	48
18	52	48
19	51	49
20	50	50
21	49	51
22	49	51
23	49	51
24	49	51
25	49	51
26	49	51
27	49	51
28	50	50
29	50	50
30	51	49

Wind in September

Winds average 13 km/h in September.

Across September, daily wind ranges from about 11 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Wind speed (km/h)	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	12	12	12	12	12	12	12	12	12	12	11
Feels	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	calm	calm	calm	calm	calm	calm

	Wind speed (km/h)	Feels
1	13	light breeze
2	13	light breeze
3	13	light breeze
4	13	light breeze
5	13	light breeze
6	13	light breeze
7	13	light breeze
8	13	light breeze
9	13	light breeze
10	13	light breeze
11	13	light breeze
12	13	light breeze
13	13	light breeze
14	13	light breeze
15	13	light breeze
16	13	light breeze
17	13	light breeze
18	13	light breeze
19	13	light breeze
20	12	light breeze
21	12	light breeze
22	12	light breeze
23	12	light breeze
24	12	light breeze
25	12	calm
26	12	calm
27	12	calm
28	12	calm
29	12	calm
30	11	calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 06 min at the start of September to 12 hours by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 6 minutes over September. Sunrise moves from 5:58 AM to 5:51 AM, and sunset from 6:04 PM to 5:49 PM.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Daylight (h)	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0
Sunrise (AM)	5:58	5:58	5:57	5:57	5:57	5:57	5:56	5:56	5:56	5:56	5:56	5:55	5:55	5:55	5:55	5:54	5:54	5:54	5:54	5:53	5:53	5:53	5:53	5:53	5:52	5:52	5:52	5:52	5:52	5:51
Sunset (PM)	6:04	6:03	6:03	6:02	6:02	6:01	6:01	6:00	6:00	5:59	5:59	5:58	5:58	5:57	5:57	5:56	5:56	5:55	5:55	5:54	5:53	5:53	5:52	5:52	5:51	5:51	5:50	5:50	5:50	5:49

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	12.1	5:58	6:04
2	12.1	5:58	6:03
3	12.1	5:57	6:03
4	12.1	5:57	6:02
5	12.1	5:57	6:02
6	12.1	5:57	6:01
7	12.1	5:56	6:01
8	12.1	5:56	6:00
9	12.1	5:56	6:00
10	12.1	5:56	5:59
11	12.1	5:56	5:59
12	12.0	5:55	5:58
13	12.0	5:55	5:58
14	12.0	5:55	5:57
15	12.0	5:55	5:57
16	12.0	5:54	5:56
17	12.0	5:54	5:56
18	12.0	5:54	5:55
19	12.0	5:54	5:55
20	12.0	5:53	5:54
21	12.0	5:53	5:53
22	12.0	5:53	5:53
23	12.0	5:53	5:52
24	12.0	5:53	5:52
25	12.0	5:52	5:51
26	12.0	5:52	5:51
27	12.0	5:52	5:50
28	12.0	5:52	5:50
29	12.0	5:52	5:50
30	12.0	5:51	5:49

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.9 kWh/m².

For context, solar energy here swings from a low near 5.06 kWh/m² to a high of 6.26 kWh/m² in April across the year — September's 5.9 kWh/m² sits near the top of that range.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Solar energy (kWh/m²)	5.9	5.9	5.9	5.9	5.9	5.9	5.9	5.9	5.9	5.9	5.9	5.9	5.9	5.9	5.9	5.9	5.9	5.9	5.9	5.9	5.9	5.9	5.9	5.9	5.9	5.9	5.9	5.9	5.9	5.9
Level	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright

	Solar energy (kWh/m²)	Level
1	5.9	Bright
2	5.9	Bright
3	5.9	Bright
4	5.9	Bright
5	5.9	Bright
6	5.9	Bright
7	5.9	Bright
8	5.9	Bright
9	5.9	Bright
10	5.9	Bright
11	5.9	Bright
12	5.9	Bright
13	5.9	Bright
14	5.9	Bright
15	5.9	Bright
16	5.9	Bright
17	5.9	Bright
18	5.9	Bright
19	5.9	Bright
20	5.9	Bright
21	5.9	Bright
22	5.9	Bright
23	5.9	Bright
24	5.9	Bright
25	5.9	Bright
26	5.9	Bright
27	5.9	Bright
28	5.9	Bright
29	5.9	Bright
30	5.9	Bright

Planning a trip in September

Hazard calendar for Bongao

In seasonPeak

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

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

Pacific typhoon

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Is September a good time to visit Bongao?

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

4.5

Sightseeing

6th-best month of the year

5.1

Beach & pool

4th-best month of the year

September is a reasonable time to visit Bongao for sightseeing.

What to pack for Bongao in September

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

In September, Bongao sees daytime highs around 28°C and nights near 27°C. Pack light clothes and rain gear. Worth having: sun protection. About 19 days see rain.

light clothesrain gearsun protection

Sea temperature near Bongao 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 16 km away) is warmest in May at about 29°C and coldest in February near 28°C.

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

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Sea temperature (°C)	28	28	28	29	29	29	29	29	29	29	29	29
Comfort	Tropical	Warm	Tropical	Tropical	Tropical	Tropical	Tropical	Tropical	Tropical	Tropical	Tropical	Tropical

	Sea temperature (°C)	Comfort
Jan	28	Tropical
Feb	28	Warm
Mar	28	Tropical
Apr	29	Tropical
May	29	Tropical
Jun	29	Tropical
Jul	29	Tropical
Aug	29	Tropical
Sep	29	Tropical
Oct	29	Tropical
Nov	29	Tropical
Dec	29	Tropical

UV index in Bongao 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 Bongao peaks around March 18 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 14 at about 11 (extreme).

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

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	13	13	14	14	13	12	11	14	13	13	12	11
Level	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme

	UV index (midday)	Level
Jan	13	Extreme
Feb	13	Extreme
Mar	14	Extreme
Apr	14	Extreme
May	13	Extreme
Jun	12	Extreme
Jul	11	Extreme
Aug	14	Extreme
Sep	13	Extreme
Oct	13	Extreme
Nov	12	Extreme
Dec	11	Extreme

Location & terrain

Where is Bongao?

Bongao sits at 5.0°N, 119.8°E, 3 m above sea level, in Philippines. The nearest listed city is Sitangkai, 58 km away.

Topography around Bongao

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

Within 3 km, the terrain around Bongao has significant variations in elevation — a maximum elevation change of 327 m around an average of 18 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 327 m; within 80 km, significant variations in elevation — a maximum elevation change of 517 m.

The land around Bongao is covered by water (47%) and trees (43%) within 3 km, water (81%) within 16 km, and water (91%) within 80 km.

3 km

327 m

water 47%

16 km

327 m

water 81%

80 km

517 m

water 91%

treesgrasslandartificial surfaceswatermangroves

← August Bongao year-round climate October →Best places to visit in September

September weather nearby: Sitangkai 58 km · Semporna 142 km · Lahad Datu 160 km · Jolo 177 km · Sandakan 204 km · Tawau 226 km · Nunukan 255 km · Mapun 257 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

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 Bongao (5.0292°, 119.7731°, elevation 3 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).

	Avg high (°C)	Avg low (°C)
1	28	26
2	28	26
3	28	26
4	28	26
5	28	26
6	28	26
7	28	26
8	28	26
9	28	26
10	28	27
11	28	27
12	28	27
13	28	27
14	28	27
15	28	27
16	28	27
17	28	27
18	28	27
19	28	27
20	28	27
21	28	27
22	28	27
23	28	27
24	28	27
25	28	27
26	28	27
27	28	27
28	28	27
29	28	27
30	28	27

	Clearer (%)	Cloudier (%)
1	32	68
2	31	69
3	31	69
4	31	69
5	30	70
6	30	70
7	28	72
8	28	72
9	27	73
10	26	74
11	26	74
12	27	73
13	26	74
14	26	74
15	26	74
16	26	74
17	27	73
18	27	73
19	28	72
20	28	72
21	29	71
22	30	70
23	30	70
24	30	70
25	30	70
26	30	70
27	30	70
28	30	70
29	29	71
30	29	71

	Rain chance (%)
1	65
2	65
3	65
4	65
5	64
6	64
7	65
8	65
9	65
10	65
11	66
12	66
13	66
14	66
15	66
16	66
17	65
18	65
19	65
20	65
21	65
22	65
23	65
24	65
25	66
26	66
27	66
28	67
29	68
30	68

	Oppressive (%)	Miserable (%)
1	56	44
2	57	43
3	57	43
4	58	42
5	58	42
6	58	42
7	58	42
8	58	42
9	57	43
10	57	43
11	56	44
12	56	44
13	55	45
14	55	45
15	54	46
16	53	47
17	52	48
18	52	48
19	51	49
20	50	50
21	49	51
22	49	51
23	49	51
24	49	51
25	49	51
26	49	51
27	49	51
28	50	50
29	50	50
30	51	49

	Avg high (°C)	Avg low (°C)
1	28	26
2	28	26
3	28	26
4	28	26
5	28	26
6	28	26
7	28	26
8	28	26
9	28	26
10	28	27
11	28	27
12	28	27
13	28	27
14	28	27
15	28	27
16	28	27
17	28	27
18	28	27
19	28	27
20	28	27
21	28	27
22	28	27
23	28	27
24	28	27
25	28	27
26	28	27
27	28	27
28	28	27
29	28	27
30	28	27

	Clearer (%)	Cloudier (%)
1	32	68
2	31	69
3	31	69
4	31	69
5	30	70
6	30	70
7	28	72
8	28	72
9	27	73
10	26	74
11	26	74
12	27	73
13	26	74
14	26	74
15	26	74
16	26	74
17	27	73
18	27	73
19	28	72
20	28	72
21	29	71
22	30	70
23	30	70
24	30	70
25	30	70
26	30	70
27	30	70
28	30	70
29	29	71
30	29	71

	Rain chance (%)
1	65
2	65
3	65
4	65
5	64
6	64
7	65
8	65
9	65
10	65
11	66
12	66
13	66
14	66
15	66
16	66
17	65
18	65
19	65
20	65
21	65
22	65
23	65
24	65
25	66
26	66
27	66
28	67
29	68
30	68

	Oppressive (%)	Miserable (%)
1	56	44
2	57	43
3	57	43
4	58	42
5	58	42
6	58	42
7	58	42
8	58	42
9	57	43
10	57	43
11	56	44
12	56	44
13	55	45
14	55	45
15	54	46
16	53	47
17	52	48
18	52	48
19	51	49
20	50	50
21	49	51
22	49	51
23	49	51
24	49	51
25	49	51
26	49	51
27	49	51
28	50	50
29	50	50
30	51	49

	Avg high (°C)	Avg low (°C)
1	28	26
2	28	26
3	28	26
4	28	26
5	28	26
6	28	26
7	28	26
8	28	26
9	28	26
10	28	27
11	28	27
12	28	27
13	28	27
14	28	27
15	28	27
16	28	27
17	28	27
18	28	27
19	28	27
20	28	27
21	28	27
22	28	27
23	28	27
24	28	27
25	28	27
26	28	27
27	28	27
28	28	27
29	28	27
30	28	27

	Clearer (%)	Cloudier (%)
1	32	68
2	31	69
3	31	69
4	31	69
5	30	70
6	30	70
7	28	72
8	28	72
9	27	73
10	26	74
11	26	74
12	27	73
13	26	74
14	26	74
15	26	74
16	26	74
17	27	73
18	27	73
19	28	72
20	28	72
21	29	71
22	30	70
23	30	70
24	30	70
25	30	70
26	30	70
27	30	70
28	30	70
29	29	71
30	29	71

	Rain chance (%)
1	65
2	65
3	65
4	65
5	64
6	64
7	65
8	65
9	65
10	65
11	66
12	66
13	66
14	66
15	66
16	66
17	65
18	65
19	65
20	65
21	65
22	65
23	65
24	65
25	66
26	66
27	66
28	67
29	68
30	68

	Oppressive (%)	Miserable (%)
1	56	44
2	57	43
3	57	43
4	58	42
5	58	42
6	58	42
7	58	42
8	58	42
9	57	43
10	57	43
11	56	44
12	56	44
13	55	45
14	55	45
15	54	46
16	53	47
17	52	48
18	52	48
19	51	49
20	50	50
21	49	51
22	49	51
23	49	51
24	49	51
25	49	51
26	49	51
27	49	51
28	50	50
29	50	50
30	51	49