Hell-Ville weather in September
In September, Hell-Ville sees average daytime highs of 27°C and overnight lows near 23°C, with 36 mm of rain across 12.7 wet days and about 11.9 hours of daylight. It is the 10th-warmest and 9th-wettest month of the year here.
Day-to-day highs hold fairly steady near 27°C through the month. The sky is clear or mostly clear about 73% of the time in September, and the air most often feels muggy.
Daylight stretches from about 11 h 42 min at the start of September to 12 h 06 min by month's end. Set against the rest of the year, September is Hell-Ville's 2nd-clearest and 3rd-windiest month. For the whole year in context, see Hell-Ville's year-round climate.
- Daytime high
- 27°
- 10th warmest
- Overnight low
- 23°
- 3rd coldest
- Rainfall
- 36 mm
- 12.7 wet days
- Daylight
- 11 h 54 min
- 5:43 AM – 5:39 PM
- Cloud cover
- 34%
- 2nd clearest
- Wind
- 9 km/h
- 3rd windiest
- Solar energy
- 6.12 kWh/m²
- Travel score
- 6.4
- out of 10
Hell-Ville is borough of the city of Nosy Be.
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in September
Day-to-day highs hold fairly steady near 27°C through the month.
A typical September day in Hell-Ville reaches about 27°C in the afternoon and slips back to 23°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 28°C. Set against its neighbours, September runs on par with August and about 1°C cooler than 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) | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 |
| Avg low (°C) | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 27 | 23 |
| 2 | 27 | 23 |
| 3 | 27 | 23 |
| 4 | 27 | 23 |
| 5 | 27 | 23 |
| 6 | 27 | 23 |
| 7 | 27 | 23 |
| 8 | 27 | 23 |
| 9 | 27 | 23 |
| 10 | 27 | 23 |
| 11 | 27 | 23 |
| 12 | 27 | 23 |
| 13 | 27 | 23 |
| 14 | 27 | 23 |
| 15 | 27 | 23 |
| 16 | 27 | 23 |
| 17 | 27 | 23 |
| 18 | 28 | 23 |
| 19 | 28 | 23 |
| 20 | 28 | 23 |
| 21 | 28 | 23 |
| 22 | 28 | 23 |
| 23 | 28 | 23 |
| 24 | 28 | 23 |
| 25 | 28 | 23 |
| 26 | 28 | 23 |
| 27 | 28 | 23 |
| 28 | 28 | 23 |
| 29 | 28 | 23 |
| 30 | 28 | 23 |
How September really feels in Hell-Ville
Once humidity and wind are folded in, September averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.
September sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Hell-Ville weather by month
How September compares with the rest of the year at a glance. September is the 10th-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 | 29° / 25° | 439 | 28.7 | 12.7 | 3.1 |
| Feb | 29° / 25° | 383 | 25.2 | 12.4 | 3.2 |
| Mar | 29° / 25° | 276 | 27.5 | 12.1 | 3.2 |
| Apr | 29° / 25° | 117 | 22.5 | 11.7 | 3.9 |
| May | 29° / 25° | 44 | 12.7 | 11.4 | 5.7 |
| Jun | 28° / 23° | 23 | 8.1 | 11.2 | 7.1 |
| Jul | 27° / 22° | 22 | 6.5 | 11.3 | 7.5 |
| Aug | 27° / 22° | 30 | 9.3 | 11.6 | 7.0 |
| Sep | 27° / 23° | 36 | 12.7 | 11.9 | 6.4 |
| Oct | 28° / 24° | 64 | 17.4 | 12.3 | 5.3 |
| Nov | 29° / 25° | 134 | 22.6 | 12.6 | 4.1 |
| Dec | 29° / 25° | 253 | 28 | 12.8 | 3.3 |
Cloud cover in September
The sky is clear or mostly clear about 73% of the time in September.
Beyond those clear spells, partly cloudy skies cover about 18% of September, with mostly cloudy or overcast conditions the remaining 8%. Skies tend to open up as the month goes on.
| 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 (%) | 92 | 92 | 92 | 91 | 91 | 91 | 91 | 91 | 91 | 91 | 91 | 91 | 92 | 91 | 91 | 91 | 91 | 91 | 91 | 91 | 92 | 92 | 92 | 93 | 93 | 93 | 93 | 94 | 94 | 94 |
| Cloudier (%) | 8 | 8 | 8 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 8 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 8 | 8 | 8 | 7 | 7 | 7 | 7 | 6 | 6 | 6 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 92 | 8 |
| 2 | 92 | 8 |
| 3 | 92 | 8 |
| 4 | 91 | 9 |
| 5 | 91 | 9 |
| 6 | 91 | 9 |
| 7 | 91 | 9 |
| 8 | 91 | 9 |
| 9 | 91 | 9 |
| 10 | 91 | 9 |
| 11 | 91 | 9 |
| 12 | 91 | 9 |
| 13 | 92 | 8 |
| 14 | 91 | 9 |
| 15 | 91 | 9 |
| 16 | 91 | 9 |
| 17 | 91 | 9 |
| 18 | 91 | 9 |
| 19 | 91 | 9 |
| 20 | 91 | 9 |
| 21 | 92 | 8 |
| 22 | 92 | 8 |
| 23 | 92 | 8 |
| 24 | 93 | 7 |
| 25 | 93 | 7 |
| 26 | 93 | 7 |
| 27 | 93 | 7 |
| 28 | 94 | 6 |
| 29 | 94 | 6 |
| 30 | 94 | 6 |
Chance of precipitation in September
Hell-Ville gets around 36 mm of rain over 12.7 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 42% and peaks near 49% on the wettest days. The odds climb 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 39 | 39 | 39 | 39 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 41 | 41 | 42 | 42 | 43 | 44 | 44 | 45 | 45 | 46 | 47 | 47 | 48 | 48 | 49 |
| Rain chance (%) | |
|---|---|
| 1 | 39 |
| 2 | 39 |
| 3 | 39 |
| 4 | 39 |
| 5 | 40 |
| 6 | 40 |
| 7 | 40 |
| 8 | 40 |
| 9 | 40 |
| 10 | 40 |
| 11 | 40 |
| 12 | 40 |
| 13 | 40 |
| 14 | 40 |
| 15 | 40 |
| 16 | 41 |
| 17 | 41 |
| 18 | 42 |
| 19 | 42 |
| 20 | 43 |
| 21 | 44 |
| 22 | 44 |
| 23 | 45 |
| 24 | 45 |
| 25 | 46 |
| 26 | 47 |
| 27 | 47 |
| 28 | 48 |
| 29 | 48 |
| 30 | 49 |
Humidity in September
Most of September feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, September lands in the muggy band about 79% of days. Sticky, muggy-or-worse air turns up on roughly 96% 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Humid (%) | 8 | 8 | 8 | 7 | 7 | 6 | 6 | 5 | 5 | 4 | 4 | 3 | 3 | 3 | 3 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 |
| Muggy (%) | 86 | 86 | 85 | 86 | 85 | 86 | 85 | 86 | 85 | 85 | 85 | 85 | 84 | 83 | 82 | 82 | 81 | 80 | 79 | 78 | 77 | 75 | 74 | 73 | 72 | 70 | 70 | 68 | 67 | 65 |
| Oppressive (%) | 6 | 6 | 7 | 7 | 8 | 8 | 9 | 9 | 10 | 11 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 23 | 24 | 25 | 26 | 28 | 29 | 31 | 32 | 34 |
| Humid (%) | Muggy (%) | Oppressive (%) | |
|---|---|---|---|
| 1 | 8 | 86 | 6 |
| 2 | 8 | 86 | 6 |
| 3 | 8 | 85 | 7 |
| 4 | 7 | 86 | 7 |
| 5 | 7 | 85 | 8 |
| 6 | 6 | 86 | 8 |
| 7 | 6 | 85 | 9 |
| 8 | 5 | 86 | 9 |
| 9 | 5 | 85 | 10 |
| 10 | 4 | 85 | 11 |
| 11 | 4 | 85 | 11 |
| 12 | 3 | 85 | 12 |
| 13 | 3 | 84 | 13 |
| 14 | 3 | 83 | 14 |
| 15 | 3 | 82 | 15 |
| 16 | 2 | 82 | 16 |
| 17 | 2 | 81 | 17 |
| 18 | 2 | 80 | 18 |
| 19 | 2 | 79 | 19 |
| 20 | 2 | 78 | 20 |
| 21 | 2 | 77 | 21 |
| 22 | 2 | 75 | 23 |
| 23 | 2 | 74 | 24 |
| 24 | 2 | 73 | 25 |
| 25 | 2 | 72 | 26 |
| 26 | 2 | 70 | 28 |
| 27 | 1 | 70 | 29 |
| 28 | 1 | 68 | 31 |
| 29 | 1 | 67 | 32 |
| 30 | 1 | 65 | 34 |
Wind in September
Winds average 9 km/h in September.
Across September, daily wind ranges from about 9 km/h on the calmest days to 9 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) | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 |
| 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 | 9 | calm |
| 2 | 9 | calm |
| 3 | 9 | calm |
| 4 | 9 | calm |
| 5 | 9 | calm |
| 6 | 9 | calm |
| 7 | 9 | calm |
| 8 | 9 | calm |
| 9 | 9 | calm |
| 10 | 9 | calm |
| 11 | 9 | calm |
| 12 | 9 | calm |
| 13 | 9 | calm |
| 14 | 9 | calm |
| 15 | 9 | calm |
| 16 | 9 | calm |
| 17 | 9 | calm |
| 18 | 9 | calm |
| 19 | 9 | calm |
| 20 | 9 | calm |
| 21 | 9 | calm |
| 22 | 9 | calm |
| 23 | 9 | calm |
| 24 | 9 | calm |
| 25 | 9 | calm |
| 26 | 9 | calm |
| 27 | 9 | calm |
| 28 | 9 | calm |
| 29 | 9 | calm |
| 30 | 9 | calm |
Sunrise & sunset in September
Daylight runs from about 11 h 42 min at the start of September to 12 h 06 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 24 minutes over September. Sunrise moves from 5:55 AM to 5:33 AM, and sunset from 5:39 PM to 5:39 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) | 11.7 | 11.8 | 11.8 | 11.8 | 11.8 | 11.8 | 11.8 | 11.8 | 11.8 | 11.9 | 11.9 | 11.9 | 11.9 | 11.9 | 11.9 | 11.9 | 11.9 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 |
| Sunrise (AM) | 5:55 | 5:54 | 5:53 | 5:52 | 5:52 | 5:51 | 5:50 | 5:49 | 5:49 | 5:48 | 5:47 | 5:46 | 5:46 | 5:45 | 5:44 | 5:43 | 5:43 | 5:42 | 5:41 | 5:40 | 5:40 | 5:39 | 5:38 | 5:37 | 5:37 | 5:36 | 5:35 | 5:35 | 5:34 | 5:33 |
| Sunset (PM) | 5:39 | 5:39 | 5:39 | 5:39 | 5:39 | 5:39 | 5:39 | 5:39 | 5:39 | 5:39 | 5:39 | 5:39 | 5:39 | 5:39 | 5:39 | 5:39 | 5:39 | 5:39 | 5:39 | 5:39 | 5:39 | 5:39 | 5:39 | 5:39 | 5:39 | 5:39 | 5:39 | 5:39 | 5:39 | 5:39 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 11.7 | 5:55 | 5:39 |
| 2 | 11.8 | 5:54 | 5:39 |
| 3 | 11.8 | 5:53 | 5:39 |
| 4 | 11.8 | 5:52 | 5:39 |
| 5 | 11.8 | 5:52 | 5:39 |
| 6 | 11.8 | 5:51 | 5:39 |
| 7 | 11.8 | 5:50 | 5:39 |
| 8 | 11.8 | 5:49 | 5:39 |
| 9 | 11.8 | 5:49 | 5:39 |
| 10 | 11.9 | 5:48 | 5:39 |
| 11 | 11.9 | 5:47 | 5:39 |
| 12 | 11.9 | 5:46 | 5:39 |
| 13 | 11.9 | 5:46 | 5:39 |
| 14 | 11.9 | 5:45 | 5:39 |
| 15 | 11.9 | 5:44 | 5:39 |
| 16 | 11.9 | 5:43 | 5:39 |
| 17 | 11.9 | 5:43 | 5:39 |
| 18 | 12.0 | 5:42 | 5:39 |
| 19 | 12.0 | 5:41 | 5:39 |
| 20 | 12.0 | 5:40 | 5:39 |
| 21 | 12.0 | 5:40 | 5:39 |
| 22 | 12.0 | 5:39 | 5:39 |
| 23 | 12.0 | 5:38 | 5:39 |
| 24 | 12.0 | 5:37 | 5:39 |
| 25 | 12.0 | 5:37 | 5:39 |
| 26 | 12.1 | 5:36 | 5:39 |
| 27 | 12.1 | 5:35 | 5:39 |
| 28 | 12.1 | 5:35 | 5:39 |
| 29 | 12.1 | 5:34 | 5:39 |
| 30 | 12.1 | 5:33 | 5:39 |
Solar energy in September
Average shortwave solar energy reaching the ground each day in September, about 6.12 kWh/m².
For context, solar energy here swings from a low near 4.77 kWh/m² to a high of 6.57 kWh/m² in November across the year — September's 6.12 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) | 5.8 | 5.8 | 5.9 | 5.9 | 5.9 | 5.9 | 5.9 | 6.0 | 6.0 | 6.0 | 6.0 | 6.0 | 6.1 | 6.1 | 6.1 | 6.1 | 6.1 | 6.2 | 6.2 | 6.2 | 6.2 | 6.2 | 6.3 | 6.3 | 6.3 | 6.3 | 6.3 | 6.3 | 6.4 | 6.4 |
| Level | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 5.8 | Bright |
| 2 | 5.8 | Bright |
| 3 | 5.9 | Bright |
| 4 | 5.9 | Bright |
| 5 | 5.9 | Bright |
| 6 | 5.9 | Bright |
| 7 | 5.9 | Bright |
| 8 | 6.0 | Bright |
| 9 | 6.0 | Bright |
| 10 | 6.0 | Intense |
| 11 | 6.0 | Intense |
| 12 | 6.0 | Intense |
| 13 | 6.1 | Intense |
| 14 | 6.1 | Intense |
| 15 | 6.1 | Intense |
| 16 | 6.1 | Intense |
| 17 | 6.1 | Intense |
| 18 | 6.2 | Intense |
| 19 | 6.2 | Intense |
| 20 | 6.2 | Intense |
| 21 | 6.2 | Intense |
| 22 | 6.2 | Intense |
| 23 | 6.3 | Intense |
| 24 | 6.3 | Intense |
| 25 | 6.3 | Intense |
| 26 | 6.3 | Intense |
| 27 | 6.3 | Intense |
| 28 | 6.3 | Intense |
| 29 | 6.4 | Intense |
| 30 | 6.4 | Intense |
Hazard calendar for Hell-Ville
None of Hell-Ville's seasonal hazards are active in September. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.
Hell-Ville sits in the South Indian Ocean cyclone belt; the season peaks January–March.
Hell-Ville's monsoon runs December–March, when most of the year's rain falls.
Is September a good time to visit Hell-Ville?
Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
September is a reasonable time to visit Hell-Ville for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Hell-Ville in September
From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In September, Hell-Ville sees daytime highs around 27°C and nights near 23°C. Pack light clothes and sun protection. Worth having: rain gear. About 13 days see rain.
Sea temperature near Hell-Ville in September
The nearest coast averages about 27°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 April at about 30°C and coldest in August 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) | 29 | 29 | 30 | 30 | 29 | 28 | 27 | 27 | 27 | 28 | 28 | 29 |
| Comfort | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Warm | Warm | Warm | Warm | Tropical | Tropical |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 29 | Tropical |
| Feb | 29 | Tropical |
| Mar | 30 | Tropical |
| Apr | 30 | Tropical |
| May | 29 | Tropical |
| Jun | 28 | Tropical |
| Jul | 27 | Warm |
| Aug | 27 | Warm |
| Sep | 27 | Warm |
| Oct | 28 | Warm |
| Nov | 28 | Tropical |
| Dec | 29 | Tropical |
UV index in Hell-Ville in September
Clear-sky midday UV in September peaks around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Hell-Ville peaks around February 16 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 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) | 14 | 15 | 14 | 12 | 10 | 9 | 9 | 11 | 12 | 13 | 13 | 14 |
| Level | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Very high | Extreme | Extreme | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 14 | Extreme |
| Feb | 15 | Extreme |
| Mar | 14 | Extreme |
| Apr | 12 | Extreme |
| May | 10 | Extreme |
| Jun | 9 | Very high |
| Jul | 9 | Very high |
| Aug | 11 | Extreme |
| Sep | 12 | Extreme |
| Oct | 13 | Extreme |
| Nov | 13 | Extreme |
| Dec | 14 | Extreme |
Air quality in Hell-Ville 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 Hell-Ville is worst in November — around 19 µg/m³ PM2.5 (moderate), about 5.7× the cleanest month (July, 3 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) | 9 | 7 | 7 | 5 | 4 | 4 | 3 | 4 | 6 | 12 | 19 | 8 |
| Level | Good | Good | Good | Good | Good | Good | Good | Good | Good | Moderate | Moderate | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 9 | Good |
| Feb | 7 | Good |
| Mar | 7 | Good |
| Apr | 5 | Good |
| May | 4 | Good |
| Jun | 4 | Good |
| Jul | 3 | Good |
| Aug | 4 | Good |
| Sep | 6 | Good |
| Oct | 12 | Moderate |
| Nov | 19 | Moderate |
| Dec | 8 | Good |
Where is Hell-Ville?
Hell-Ville sits at 13.4°S, 48.3°E, 23 m above sea level, in Madagascar. The nearest listed city is Ambanja, 36 km away.
Topography around Hell-Ville
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Hell-Ville.
Within 3 km, the terrain around Hell-Ville has only modest variations in elevation — a maximum elevation change of 159 m around an average of 32 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 599 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,848 m.
The land around Hell-Ville is covered by trees (33%) and water (30%) within 3 km, water (67%) and trees (22%) within 16 km, and water (57%) and trees (28%) within 80 km.
Madagascar travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type C / E
- 220 V · 50 Hz
- Prices
- ≈ 31% of US
- price level, 2025
- GDP per capita
- $599
- 2025
- Happiness
- 4.2 / 10
- World Happiness, 2025
- Safe drinking water
- 22%
- of population, 2024
- Road deaths
- 29.2
- per 100k/yr, 2019
- Income group
- Low
- World Bank
- English
- Low
- EF EPI 457
- 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 Hell-Ville (-13.3972°, 48.2666°, elevation 23 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).