Irosin weather in December
In December, Irosin sees average daytime highs of 28°C and overnight lows near 25°C, with 248 mm of rain across 23.5 wet days and about 11.3 hours of daylight. It is the 10th-warmest and 2nd-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 13% of the time in December, and the air most often feels miserable.
Daylight stretches from about 11 h 18 min at the start of December to 11 h 18 min by month's end. Set against the rest of the year, December is Irosin's 7th-clearest and 2nd-windiest month. For the whole year in context, see Irosin's year-round climate.
- Daytime high
- 28°
- 10th warmest
- Overnight low
- 25°
- 4th coldest
- Rainfall
- 248 mm
- 23.5 wet days
- Daylight
- 11 h 18 min
- 6:02 AM – 5:18 PM
- Cloud cover
- 75%
- 7th clearest
- Wind
- 18 km/h
- 2nd windiest
- Solar energy
- 4.02 kWh/m²
- Travel score
- 4.0
- out of 10
Irosin is municipality of the Philippines in the province of Sorsogon.
- Density
- 138/km²
- people per km²
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in December
Day-to-day highs hold fairly steady near 28°C through the month.
A typical December day in Irosin reaches about 28°C in the afternoon and slips back to 25°C overnight — a 4°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, December runs about 1°C cooler than November and on par with January.
| 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 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) | 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 | 24 | 24 | 24 | 24 | 24 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 29 | 25 |
| 2 | 29 | 25 |
| 3 | 29 | 25 |
| 4 | 29 | 25 |
| 5 | 29 | 25 |
| 6 | 29 | 25 |
| 7 | 29 | 25 |
| 8 | 29 | 25 |
| 9 | 28 | 25 |
| 10 | 28 | 25 |
| 11 | 28 | 25 |
| 12 | 28 | 25 |
| 13 | 28 | 25 |
| 14 | 28 | 25 |
| 15 | 28 | 25 |
| 16 | 28 | 25 |
| 17 | 28 | 25 |
| 18 | 28 | 25 |
| 19 | 28 | 25 |
| 20 | 28 | 25 |
| 21 | 28 | 25 |
| 22 | 28 | 25 |
| 23 | 28 | 25 |
| 24 | 28 | 25 |
| 25 | 28 | 25 |
| 26 | 28 | 25 |
| 27 | 28 | 24 |
| 28 | 28 | 24 |
| 29 | 28 | 24 |
| 30 | 28 | 24 |
| 31 | 28 | 24 |
How December really feels in Irosin
Once humidity and wind are folded in, December averages 24 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 December is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Irosin weather by month
How December compares with the rest of the year at a glance. December is the 10th-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 | 28° / 24° | 172 | 20.4 | 11.3 | 4.8 |
| Feb | 28° / 24° | 107 | 15.7 | 11.6 | 5.0 |
| Mar | 29° / 24° | 90 | 15.6 | 11.9 | 4.9 |
| Apr | 30° / 25° | 59 | 12.2 | 12.3 | 4.7 |
| May | 31° / 26° | 128 | 18.8 | 12.6 | 3.6 |
| Jun | 31° / 26° | 191 | 24.4 | 12.7 | 2.9 |
| Jul | 30° / 25° | 284 | 27.6 | 12.7 | 2.8 |
| Aug | 30° / 26° | 222 | 25.2 | 12.4 | 3.1 |
| Sep | 30° / 25° | 248 | 26 | 12.1 | 2.9 |
| Oct | 30° / 25° | 218 | 26.3 | 11.7 | 3.1 |
| Nov | 29° / 25° | 188 | 24.2 | 11.4 | 3.5 |
| Dec | 28° / 25° | 248 | 23.5 | 11.3 | 4.0 |
Cloud cover in December
The sky is clear or mostly clear about 13% of the time in December.
Beyond those clear spells, partly cloudy skies cover about 16% of December, 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 30 | 30 | 30 | 29 | 29 | 29 | 30 | 30 | 30 | 29 | 29 | 30 | 29 | 29 | 30 | 29 | 29 | 29 | 28 | 27 | 28 | 28 | 27 | 27 | 28 | 28 | 29 | 29 | 28 | 29 | 30 |
| Cloudier (%) | 70 | 70 | 70 | 71 | 71 | 71 | 70 | 70 | 70 | 71 | 71 | 70 | 71 | 71 | 70 | 71 | 71 | 71 | 72 | 73 | 72 | 72 | 73 | 73 | 72 | 72 | 71 | 71 | 72 | 71 | 70 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 30 | 70 |
| 2 | 30 | 70 |
| 3 | 30 | 70 |
| 4 | 29 | 71 |
| 5 | 29 | 71 |
| 6 | 29 | 71 |
| 7 | 30 | 70 |
| 8 | 30 | 70 |
| 9 | 30 | 70 |
| 10 | 29 | 71 |
| 11 | 29 | 71 |
| 12 | 30 | 70 |
| 13 | 29 | 71 |
| 14 | 29 | 71 |
| 15 | 30 | 70 |
| 16 | 29 | 71 |
| 17 | 29 | 71 |
| 18 | 29 | 71 |
| 19 | 28 | 72 |
| 20 | 27 | 73 |
| 21 | 28 | 72 |
| 22 | 28 | 72 |
| 23 | 27 | 73 |
| 24 | 27 | 73 |
| 25 | 28 | 72 |
| 26 | 28 | 72 |
| 27 | 29 | 71 |
| 28 | 29 | 71 |
| 29 | 28 | 72 |
| 30 | 29 | 71 |
| 31 | 30 | 70 |
Chance of precipitation in December
Irosin gets around 248 mm of rain over 23.5 wet days in December. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 75% and peaks near 78% on the wettest days. The odds ease toward the end of the month.
| 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 78 | 78 | 78 | 78 | 78 | 78 | 78 | 78 | 78 | 78 | 78 | 78 | 78 | 78 | 77 | 77 | 76 | 76 | 76 | 75 | 75 | 74 | 73 | 73 | 72 | 72 | 71 | 71 | 70 | 70 | 70 |
| Rain chance (%) | |
|---|---|
| 1 | 78 |
| 2 | 78 |
| 3 | 78 |
| 4 | 78 |
| 5 | 78 |
| 6 | 78 |
| 7 | 78 |
| 8 | 78 |
| 9 | 78 |
| 10 | 78 |
| 11 | 78 |
| 12 | 78 |
| 13 | 78 |
| 14 | 78 |
| 15 | 77 |
| 16 | 77 |
| 17 | 76 |
| 18 | 76 |
| 19 | 76 |
| 20 | 75 |
| 21 | 75 |
| 22 | 74 |
| 23 | 73 |
| 24 | 73 |
| 25 | 72 |
| 26 | 72 |
| 27 | 71 |
| 28 | 71 |
| 29 | 70 |
| 30 | 70 |
| 31 | 70 |
Humidity in December
Most of December feels miserable — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, December lands in the miserable band about 64% 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Muggy (%) | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 3 | 3 | 4 | 4 | 5 | 5 | 6 | 6 | 7 | 7 | 8 | 8 | 8 |
| Oppressive (%) | 24 | 25 | 25 | 25 | 26 | 26 | 26 | 26 | 27 | 27 | 28 | 29 | 29 | 30 | 31 | 32 | 33 | 34 | 34 | 35 | 36 | 36 | 37 | 38 | 39 | 39 | 40 | 41 | 42 | 44 | 45 |
| Miserable (%) | 75 | 74 | 74 | 74 | 73 | 73 | 73 | 73 | 72 | 72 | 71 | 70 | 70 | 69 | 68 | 66 | 65 | 64 | 63 | 62 | 60 | 60 | 58 | 57 | 55 | 55 | 53 | 52 | 49 | 48 | 46 |
| Muggy (%) | Oppressive (%) | Miserable (%) | |
|---|---|---|---|
| 1 | 1 | 24 | 75 |
| 2 | 1 | 25 | 74 |
| 3 | 1 | 25 | 74 |
| 4 | 1 | 25 | 74 |
| 5 | 1 | 26 | 73 |
| 6 | 1 | 26 | 73 |
| 7 | 1 | 26 | 73 |
| 8 | 1 | 26 | 73 |
| 9 | 1 | 27 | 72 |
| 10 | 1 | 27 | 72 |
| 11 | 1 | 28 | 71 |
| 12 | 1 | 29 | 70 |
| 13 | 1 | 29 | 70 |
| 14 | 1 | 30 | 69 |
| 15 | 1 | 31 | 68 |
| 16 | 2 | 32 | 66 |
| 17 | 2 | 33 | 65 |
| 18 | 2 | 34 | 64 |
| 19 | 3 | 34 | 63 |
| 20 | 3 | 35 | 62 |
| 21 | 4 | 36 | 60 |
| 22 | 4 | 36 | 60 |
| 23 | 5 | 37 | 58 |
| 24 | 5 | 38 | 57 |
| 25 | 6 | 39 | 55 |
| 26 | 6 | 39 | 55 |
| 27 | 7 | 40 | 53 |
| 28 | 7 | 41 | 52 |
| 29 | 8 | 42 | 49 |
| 30 | 8 | 44 | 48 |
| 31 | 8 | 45 | 46 |
Wind in December
Winds average 18 km/h in December.
Across December, daily wind ranges from about 16 km/h on the calmest days to 19 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 16 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 19 | 19 | 19 | 19 | 19 | 19 |
| 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 | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 16 | light breeze |
| 2 | 17 | light breeze |
| 3 | 17 | light breeze |
| 4 | 17 | light breeze |
| 5 | 17 | light breeze |
| 6 | 17 | light breeze |
| 7 | 17 | light breeze |
| 8 | 17 | light breeze |
| 9 | 17 | light breeze |
| 10 | 17 | light breeze |
| 11 | 17 | light breeze |
| 12 | 17 | light breeze |
| 13 | 17 | light breeze |
| 14 | 18 | light breeze |
| 15 | 18 | light breeze |
| 16 | 18 | light breeze |
| 17 | 18 | light breeze |
| 18 | 18 | light breeze |
| 19 | 18 | light breeze |
| 20 | 18 | light breeze |
| 21 | 18 | light breeze |
| 22 | 18 | light breeze |
| 23 | 18 | light breeze |
| 24 | 18 | light breeze |
| 25 | 18 | light breeze |
| 26 | 19 | light breeze |
| 27 | 19 | light breeze |
| 28 | 19 | light breeze |
| 29 | 19 | light breeze |
| 30 | 19 | light breeze |
| 31 | 19 | light breeze |
Sunrise & sunset in December
Daylight runs from about 11 h 18 min at the start of December to 11 h 18 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 0 minutes over December. Sunrise moves from 5:54 AM to 6:09 AM, and sunset from 5:13 PM to 5:25 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 |
| Sunrise (AM) | 5:54 | 5:55 | 5:55 | 5:56 | 5:57 | 5:57 | 5:58 | 5:58 | 5:59 | 5:59 | 6:00 | 6:00 | 6:01 | 6:01 | 6:02 | 6:02 | 6:03 | 6:03 | 6:04 | 6:04 | 6:05 | 6:05 | 6:06 | 6:06 | 6:07 | 6:07 | 6:08 | 6:08 | 6:08 | 6:09 | 6:09 |
| Sunset (PM) | 5:13 | 5:13 | 5:13 | 5:14 | 5:14 | 5:14 | 5:14 | 5:15 | 5:15 | 5:15 | 5:16 | 5:16 | 5:17 | 5:17 | 5:17 | 5:18 | 5:18 | 5:19 | 5:19 | 5:19 | 5:20 | 5:20 | 5:21 | 5:21 | 5:22 | 5:22 | 5:23 | 5:23 | 5:24 | 5:24 | 5:25 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 11.3 | 5:54 | 5:13 |
| 2 | 11.3 | 5:55 | 5:13 |
| 3 | 11.3 | 5:55 | 5:13 |
| 4 | 11.3 | 5:56 | 5:14 |
| 5 | 11.3 | 5:57 | 5:14 |
| 6 | 11.3 | 5:57 | 5:14 |
| 7 | 11.3 | 5:58 | 5:14 |
| 8 | 11.3 | 5:58 | 5:15 |
| 9 | 11.3 | 5:59 | 5:15 |
| 10 | 11.3 | 5:59 | 5:15 |
| 11 | 11.3 | 6:00 | 5:16 |
| 12 | 11.3 | 6:00 | 5:16 |
| 13 | 11.3 | 6:01 | 5:17 |
| 14 | 11.3 | 6:01 | 5:17 |
| 15 | 11.3 | 6:02 | 5:17 |
| 16 | 11.3 | 6:02 | 5:18 |
| 17 | 11.3 | 6:03 | 5:18 |
| 18 | 11.3 | 6:03 | 5:19 |
| 19 | 11.3 | 6:04 | 5:19 |
| 20 | 11.3 | 6:04 | 5:19 |
| 21 | 11.3 | 6:05 | 5:20 |
| 22 | 11.3 | 6:05 | 5:20 |
| 23 | 11.3 | 6:06 | 5:21 |
| 24 | 11.3 | 6:06 | 5:21 |
| 25 | 11.3 | 6:07 | 5:22 |
| 26 | 11.3 | 6:07 | 5:22 |
| 27 | 11.3 | 6:08 | 5:23 |
| 28 | 11.3 | 6:08 | 5:23 |
| 29 | 11.3 | 6:08 | 5:24 |
| 30 | 11.3 | 6:09 | 5:24 |
| 31 | 11.3 | 6:09 | 5:25 |
Solar energy in December
Average shortwave solar energy reaching the ground each day in December, about 4.02 kWh/m² — the year's lowest.
For context, solar energy here swings from a low near 4.02 kWh/m² to a high of 6.33 kWh/m² in April across the year — December's 4.02 kWh/m² sits near the bottom.
| 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 4.2 | 4.2 | 4.2 | 4.2 | 4.2 | 4.1 | 4.1 | 4.1 | 4.1 | 4.1 | 4.1 | 4.1 | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | 4.1 | 4.1 | 4.1 | 4.1 | 4.1 | 4.1 | 4.1 |
| 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 | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 4.2 | Bright |
| 2 | 4.2 | Bright |
| 3 | 4.2 | Bright |
| 4 | 4.2 | Bright |
| 5 | 4.2 | Bright |
| 6 | 4.1 | Bright |
| 7 | 4.1 | Bright |
| 8 | 4.1 | Bright |
| 9 | 4.1 | Bright |
| 10 | 4.1 | Bright |
| 11 | 4.1 | Bright |
| 12 | 4.1 | Bright |
| 13 | 4.0 | Bright |
| 14 | 4.0 | Bright |
| 15 | 4.0 | Bright |
| 16 | 4.0 | Bright |
| 17 | 4.0 | Bright |
| 18 | 4.0 | Bright |
| 19 | 4.0 | Bright |
| 20 | 4.0 | Bright |
| 21 | 4.0 | Bright |
| 22 | 4.0 | Bright |
| 23 | 4.0 | Bright |
| 24 | 4.0 | Bright |
| 25 | 4.1 | Bright |
| 26 | 4.1 | Bright |
| 27 | 4.1 | Bright |
| 28 | 4.1 | Bright |
| 29 | 4.1 | Bright |
| 30 | 4.1 | Bright |
| 31 | 4.1 | Bright |
Hazard calendar for Irosin
In December, Irosin sits inside its pacific typhoon season. The full year is below, with each hazard's peak months called out.
Irosin sits in the Pacific typhoon belt; the season peaks July–October.
Is December a good time to visit Irosin?
Our two travel scores rate December for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
December is a reasonable time to visit Irosin for sightseeing.
What to pack for Irosin in December
From December's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In December, Irosin sees daytime highs around 28°C and nights near 25°C. Pack light clothes and rain gear. About 24 days see rain.
Sea temperature near Irosin in December
The nearest coast averages about 27°C in December — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 13 km away) is warmest in June at about 29°C and coldest in February near 26°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 | 26 | 27 | 28 | 29 | 29 | 29 | 29 | 29 | 29 | 28 | 27 |
| Comfort | Warm | Warm | Warm | Warm | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Warm |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 27 | Warm |
| Feb | 26 | Warm |
| Mar | 27 | Warm |
| Apr | 28 | Warm |
| May | 29 | Tropical |
| Jun | 29 | Tropical |
| Jul | 29 | Tropical |
| Aug | 29 | Tropical |
| Sep | 29 | Tropical |
| Oct | 29 | Tropical |
| Nov | 28 | Tropical |
| Dec | 27 | Warm |
UV index in Irosin in December
Clear-sky midday UV in December peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Irosin 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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 10 | 12 | 13 | 14 | 13 | 13 | 12 | 13 | 13 | 11 | 10 | 9 |
| Level | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Very high |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 10 | Extreme |
| Feb | 12 | Extreme |
| Mar | 13 | Extreme |
| Apr | 14 | Extreme |
| May | 13 | Extreme |
| Jun | 13 | Extreme |
| Jul | 12 | Extreme |
| Aug | 13 | Extreme |
| Sep | 13 | Extreme |
| Oct | 11 | Extreme |
| Nov | 10 | Very high |
| Dec | 9 | Very high |
Air quality in Irosin in December
Average fine-particle pollution (PM2.5) through the year — so you can see where December falls, not just the annual average.
Air quality in Irosin 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).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 14 | 17 | 11 | 9 | 11 | 16 | 20 | 17 | 18 | 17 | 12 | 12 |
| Level | Moderate | Moderate | Good | Good | Good | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 14 | Moderate |
| Feb | 17 | Moderate |
| Mar | 11 | Good |
| Apr | 9 | Good |
| May | 11 | Good |
| Jun | 16 | Moderate |
| Jul | 20 | Moderate |
| Aug | 17 | Moderate |
| Sep | 18 | Moderate |
| Oct | 17 | Moderate |
| Nov | 12 | Good |
| Dec | 12 | Good |
Where is Irosin?
Irosin sits at 12.7°N, 124.0°E, 33 m above sea level, in Philippines. The nearest listed city is Bulan, 17 km away.
Topography around Irosin
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Irosin.
Within 3 km, the terrain around Irosin has significant variations in elevation — a maximum elevation change of 390 m around an average of 99 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,544 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,412 m.
The land around Irosin is covered by trees (69%) and cropland (27%) within 3 km, trees (77%) within 16 km, and water (63%) and trees (33%) 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 Irosin (12.7001°, 124.0322°, elevation 33 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).