Bay weather in September
In September, Bay sees average daytime highs of 29°C and overnight lows near 25°C, with 314 mm of rain across 27.1 wet days and about 12.1 hours of daylight. It is the 5th-warmest and 2nd-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 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 Bay's 10th-clearest and 10th-windiest month. For the whole year in context, see Bay's year-round climate.
- Daytime high
- 29°
- 5th warmest
- Overnight low
- 25°
- 7th coldest
- Rainfall
- 314 mm
- 27.1 wet days
- Daylight
- 12 h 06 min
- 5:47 AM – 5:52 PM
- Cloud cover
- 88%
- 10th clearest
- Wind
- 8 km/h
- 10th windiest
- Solar energy
- 4.72 kWh/m²
- Travel score
- 3.0
- out of 10
Bay is municipality of the Philippines in the province of Laguna.
- Density
- 786/km²
- people per km²
- Founded
- 1578
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in September
Day-to-day highs hold fairly steady near 29°C through the month.
A typical September day in Bay reaches about 29°C in the afternoon and slips back to 25°C overnight — a 5°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.
| 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) | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 |
| Avg low (°C) | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 30 | 25 |
| 2 | 30 | 25 |
| 3 | 30 | 25 |
| 4 | 30 | 25 |
| 5 | 30 | 25 |
| 6 | 30 | 25 |
| 7 | 30 | 25 |
| 8 | 29 | 25 |
| 9 | 29 | 25 |
| 10 | 29 | 25 |
| 11 | 29 | 25 |
| 12 | 29 | 25 |
| 13 | 29 | 25 |
| 14 | 29 | 25 |
| 15 | 29 | 25 |
| 16 | 29 | 25 |
| 17 | 29 | 25 |
| 18 | 29 | 25 |
| 19 | 29 | 25 |
| 20 | 29 | 25 |
| 21 | 29 | 25 |
| 22 | 29 | 25 |
| 23 | 29 | 25 |
| 24 | 29 | 25 |
| 25 | 29 | 25 |
| 26 | 29 | 25 |
| 27 | 29 | 25 |
| 28 | 29 | 25 |
| 29 | 29 | 25 |
| 30 | 29 | 25 |
How September really feels in Bay
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.
The story in September is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Bay weather by month
How September compares with the rest of the year at a glance. September is the 5th-warmest and 2nd-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 27° / 23° | 40 | 4.6 | 11.3 | 7.2 |
| Feb | 27° / 23° | 27 | 3.8 | 11.5 | 7.3 |
| Mar | 29° / 24° | 33 | 4.6 | 11.9 | 6.6 |
| Apr | 30° / 25° | 37 | 6.1 | 12.3 | 5.3 |
| May | 31° / 25° | 170 | 19.2 | 12.6 | 3.5 |
| Jun | 31° / 25° | 243 | 25.8 | 12.8 | 2.8 |
| Jul | 30° / 25° | 368 | 28.9 | 12.8 | 2.8 |
| Aug | 29° / 25° | 301 | 27.9 | 12.5 | 3.0 |
| Sep | 29° / 25° | 314 | 27.1 | 12.1 | 3.0 |
| Oct | 29° / 25° | 194 | 19.4 | 11.7 | 4.1 |
| Nov | 28° / 25° | 103 | 10.6 | 11.3 | 5.6 |
| Dec | 27° / 24° | 141 | 10.4 | 11.2 | 6.3 |
Cloud cover in September
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 90%.
| 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 (%) | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 8 | 8 | 8 | 8 | 8 | 7 | 7 | 7 | 8 | 8 | 9 | 9 | 10 | 11 | 11 | 12 | 13 | 14 | 14 | 15 | 15 | 17 |
| Cloudier (%) | 91 | 91 | 91 | 91 | 91 | 91 | 91 | 91 | 92 | 92 | 92 | 92 | 92 | 93 | 93 | 93 | 92 | 92 | 91 | 91 | 90 | 89 | 89 | 88 | 87 | 86 | 86 | 85 | 85 | 83 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 9 | 91 |
| 2 | 9 | 91 |
| 3 | 9 | 91 |
| 4 | 9 | 91 |
| 5 | 9 | 91 |
| 6 | 9 | 91 |
| 7 | 9 | 91 |
| 8 | 9 | 91 |
| 9 | 8 | 92 |
| 10 | 8 | 92 |
| 11 | 8 | 92 |
| 12 | 8 | 92 |
| 13 | 8 | 92 |
| 14 | 7 | 93 |
| 15 | 7 | 93 |
| 16 | 7 | 93 |
| 17 | 8 | 92 |
| 18 | 8 | 92 |
| 19 | 9 | 91 |
| 20 | 9 | 91 |
| 21 | 10 | 90 |
| 22 | 11 | 89 |
| 23 | 11 | 89 |
| 24 | 12 | 88 |
| 25 | 13 | 87 |
| 26 | 14 | 86 |
| 27 | 14 | 86 |
| 28 | 15 | 85 |
| 29 | 15 | 85 |
| 30 | 17 | 83 |
Chance of precipitation in September
Bay gets around 314 mm of rain over 27.1 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 93% 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 (%) | 89 | 89 | 89 | 89 | 89 | 90 | 90 | 91 | 91 | 92 | 92 | 93 | 93 | 93 | 93 | 93 | 93 | 93 | 92 | 92 | 91 | 90 | 90 | 89 | 88 | 88 | 87 | 86 | 86 | 85 |
| Rain chance (%) | |
|---|---|
| 1 | 89 |
| 2 | 89 |
| 3 | 89 |
| 4 | 89 |
| 5 | 89 |
| 6 | 90 |
| 7 | 90 |
| 8 | 91 |
| 9 | 91 |
| 10 | 92 |
| 11 | 92 |
| 12 | 93 |
| 13 | 93 |
| 14 | 93 |
| 15 | 93 |
| 16 | 93 |
| 17 | 93 |
| 18 | 93 |
| 19 | 92 |
| 20 | 92 |
| 21 | 91 |
| 22 | 90 |
| 23 | 90 |
| 24 | 89 |
| 25 | 88 |
| 26 | 88 |
| 27 | 87 |
| 28 | 86 |
| 29 | 86 |
| 30 | 85 |
Humidity in September
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 80% 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 (%) | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 20 | 20 | 20 | 20 | 21 | 21 | 22 | 22 | 23 | 24 | 25 | 26 | 27 |
| Miserable (%) | 81 | 81 | 81 | 81 | 81 | 81 | 81 | 81 | 81 | 81 | 81 | 81 | 81 | 81 | 81 | 81 | 81 | 80 | 80 | 80 | 80 | 79 | 79 | 78 | 78 | 77 | 76 | 75 | 74 | 73 |
| Oppressive (%) | Miserable (%) | |
|---|---|---|
| 1 | 19 | 81 |
| 2 | 19 | 81 |
| 3 | 19 | 81 |
| 4 | 19 | 81 |
| 5 | 19 | 81 |
| 6 | 19 | 81 |
| 7 | 19 | 81 |
| 8 | 19 | 81 |
| 9 | 19 | 81 |
| 10 | 19 | 81 |
| 11 | 19 | 81 |
| 12 | 19 | 81 |
| 13 | 19 | 81 |
| 14 | 19 | 81 |
| 15 | 19 | 81 |
| 16 | 19 | 81 |
| 17 | 19 | 81 |
| 18 | 20 | 80 |
| 19 | 20 | 80 |
| 20 | 20 | 80 |
| 21 | 20 | 80 |
| 22 | 21 | 79 |
| 23 | 21 | 79 |
| 24 | 22 | 78 |
| 25 | 22 | 78 |
| 26 | 23 | 77 |
| 27 | 24 | 76 |
| 28 | 25 | 75 |
| 29 | 26 | 74 |
| 30 | 27 | 73 |
Wind in September
Winds average 8 km/h in September.
Across September, daily wind ranges from about 7 km/h on the calmest days to 8 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) | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 7 | 7 | 7 | 7 |
| Feels | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 8 | calm |
| 2 | 8 | calm |
| 3 | 8 | calm |
| 4 | 8 | calm |
| 5 | 8 | calm |
| 6 | 8 | calm |
| 7 | 8 | calm |
| 8 | 8 | calm |
| 9 | 8 | calm |
| 10 | 8 | calm |
| 11 | 8 | calm |
| 12 | 8 | calm |
| 13 | 8 | calm |
| 14 | 8 | calm |
| 15 | 8 | calm |
| 16 | 8 | calm |
| 17 | 8 | calm |
| 18 | 8 | calm |
| 19 | 8 | calm |
| 20 | 8 | calm |
| 21 | 8 | calm |
| 22 | 8 | calm |
| 23 | 8 | calm |
| 24 | 8 | calm |
| 25 | 8 | calm |
| 26 | 8 | calm |
| 27 | 7 | calm |
| 28 | 7 | calm |
| 29 | 7 | calm |
| 30 | 7 | calm |
Sunrise & sunset in September
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 5:46 AM to 5:48 AM, and sunset from 6:03 PM to 5:41 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) | 12.3 | 12.3 | 12.3 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 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 | 11.9 | 11.9 | 11.9 | 11.9 | 11.9 |
| Sunrise (AM) | 5:46 | 5:46 | 5:46 | 5:46 | 5:46 | 5:46 | 5:47 | 5:47 | 5:47 | 5:47 | 5:47 | 5:47 | 5:47 | 5:47 | 5:47 | 5:47 | 5:47 | 5:47 | 5:47 | 5:47 | 5:47 | 5:47 | 5:47 | 5:47 | 5:47 | 5:47 | 5:47 | 5:47 | 5:47 | 5:48 |
| Sunset (PM) | 6:03 | 6:02 | 6:01 | 6:01 | 6:00 | 5:59 | 5:58 | 5:58 | 5:57 | 5:56 | 5:55 | 5:55 | 5:54 | 5:53 | 5:52 | 5:52 | 5:51 | 5:50 | 5:49 | 5:48 | 5:48 | 5:47 | 5:46 | 5:45 | 5:45 | 5:44 | 5:43 | 5:42 | 5:42 | 5:41 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 12.3 | 5:46 | 6:03 |
| 2 | 12.3 | 5:46 | 6:02 |
| 3 | 12.3 | 5:46 | 6:01 |
| 4 | 12.2 | 5:46 | 6:01 |
| 5 | 12.2 | 5:46 | 6:00 |
| 6 | 12.2 | 5:46 | 5:59 |
| 7 | 12.2 | 5:47 | 5:58 |
| 8 | 12.2 | 5:47 | 5:58 |
| 9 | 12.2 | 5:47 | 5:57 |
| 10 | 12.2 | 5:47 | 5:56 |
| 11 | 12.1 | 5:47 | 5:55 |
| 12 | 12.1 | 5:47 | 5:55 |
| 13 | 12.1 | 5:47 | 5:54 |
| 14 | 12.1 | 5:47 | 5:53 |
| 15 | 12.1 | 5:47 | 5:52 |
| 16 | 12.1 | 5:47 | 5:52 |
| 17 | 12.1 | 5:47 | 5:51 |
| 18 | 12.1 | 5:47 | 5:50 |
| 19 | 12.0 | 5:47 | 5:49 |
| 20 | 12.0 | 5:47 | 5:48 |
| 21 | 12.0 | 5:47 | 5:48 |
| 22 | 12.0 | 5:47 | 5:47 |
| 23 | 12.0 | 5:47 | 5:46 |
| 24 | 12.0 | 5:47 | 5:45 |
| 25 | 12.0 | 5:47 | 5:45 |
| 26 | 11.9 | 5:47 | 5:44 |
| 27 | 11.9 | 5:47 | 5:43 |
| 28 | 11.9 | 5:47 | 5:42 |
| 29 | 11.9 | 5:47 | 5:42 |
| 30 | 11.9 | 5:48 | 5:41 |
Solar energy in September
Average shortwave solar energy reaching the ground each day in September, about 4.72 kWh/m².
For context, solar energy here swings from a low near 3.79 kWh/m² to a high of 6.37 kWh/m² in April across the year — September's 4.72 kWh/m² falls in the middle.
| 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) | 4.9 | 4.9 | 4.9 | 4.9 | 4.9 | 4.9 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.6 | 4.6 | 4.6 | 4.6 | 4.6 | 4.6 | 4.6 | 4.6 | 4.6 | 4.6 | 4.6 | 4.6 | 4.6 |
| 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 | 4.9 | Bright |
| 2 | 4.9 | Bright |
| 3 | 4.9 | Bright |
| 4 | 4.9 | Bright |
| 5 | 4.9 | Bright |
| 6 | 4.9 | Bright |
| 7 | 4.8 | Bright |
| 8 | 4.8 | Bright |
| 9 | 4.8 | Bright |
| 10 | 4.8 | Bright |
| 11 | 4.8 | Bright |
| 12 | 4.7 | Bright |
| 13 | 4.7 | Bright |
| 14 | 4.7 | Bright |
| 15 | 4.7 | Bright |
| 16 | 4.7 | Bright |
| 17 | 4.7 | Bright |
| 18 | 4.6 | Bright |
| 19 | 4.6 | Bright |
| 20 | 4.6 | Bright |
| 21 | 4.6 | Bright |
| 22 | 4.6 | Bright |
| 23 | 4.6 | Bright |
| 24 | 4.6 | Bright |
| 25 | 4.6 | Bright |
| 26 | 4.6 | Bright |
| 27 | 4.6 | Bright |
| 28 | 4.6 | Bright |
| 29 | 4.6 | Bright |
| 30 | 4.6 | Bright |
Hazard calendar for Bay
In September, Bay sits inside its pacific typhoon and monsoon season. The full year is below, with each hazard's peak months called out.
Bay sits in the Pacific typhoon belt; the season peaks July–October.
Bay's monsoon runs May–October, when most of the year's rain falls.
Is September a good time to visit Bay?
Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
September is a weaker month for outdoor sightseeing in Bay.
What to pack for Bay in September
From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In September, Bay sees daytime highs around 29°C and nights near 25°C. Pack light clothes and rain gear. Worth having: sun protection. About 27 days see rain.
Sea temperature near Bay 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 49 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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 27 | 27 | 27 | 29 | 30 | 30 | 29 | 29 | 29 | 29 | 28 | 27 |
| Comfort | Warm | Warm | Warm | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Warm |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 27 | Warm |
| Feb | 27 | Warm |
| Mar | 27 | Warm |
| Apr | 29 | Tropical |
| May | 30 | Tropical |
| Jun | 30 | Tropical |
| Jul | 29 | Tropical |
| Aug | 29 | Tropical |
| Sep | 29 | Tropical |
| Oct | 29 | Tropical |
| Nov | 28 | Tropical |
| Dec | 27 | Warm |
UV index in Bay in September
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 Bay 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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 10 | 11 | 13 | 13 | 12 | 12 | 12 | 14 | 13 | 11 | 9 | 9 |
| Level | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Very high |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 10 | Very high |
| Feb | 11 | Extreme |
| Mar | 13 | Extreme |
| Apr | 13 | Extreme |
| May | 12 | Extreme |
| Jun | 12 | Extreme |
| Jul | 12 | Extreme |
| Aug | 14 | Extreme |
| Sep | 13 | Extreme |
| Oct | 11 | Extreme |
| Nov | 9 | Very high |
| Dec | 9 | Very high |
Air quality in Bay in September
Average fine-particle pollution (PM2.5) through the year — so you can see where September falls, not just the annual average.
Air quality in Bay is worst in September — around 32 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (February, 15 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 17 | 15 | 17 | 17 | 23 | 29 | 28 | 28 | 32 | 27 | 19 | 16 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 17 | Moderate |
| Feb | 15 | Moderate |
| Mar | 17 | Moderate |
| Apr | 17 | Moderate |
| May | 23 | Moderate |
| Jun | 29 | Moderate |
| Jul | 28 | Moderate |
| Aug | 28 | Moderate |
| Sep | 32 | Moderate |
| Oct | 27 | Moderate |
| Nov | 19 | Moderate |
| Dec | 16 | Moderate |
Where is Bay?
Bay sits at 14.2°N, 121.3°E, 11 m above sea level, in Philippines. The nearest listed city is Calauan, 5.0 km away.
Topography around Bay
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Bay.
Within 3 km, the terrain around Bay has only modest variations in elevation — a maximum elevation change of 22 m around an average of 6 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,088 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,141 m.
The land around Bay is covered by cropland (43%) and water (24%) within 3 km, trees (49%) and water (30%) within 16 km, and trees (44%) and water (43%) within 80 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 Bay (14.1837°, 121.2855°, elevation 11 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).