Promissão weather in September
In September, Promissão sees average daytime highs of 31°C and overnight lows near 19°C, with 57 mm of rain across 6.9 wet days and about 11.9 hours of daylight. It is the 3rd-warmest and 8th-wettest month of the year here.
Day-to-day highs hold fairly steady near 31°C through the month. The sky is clear or mostly clear about 55% of the time in September, and the air most often feels dry.
Daylight stretches from about 11 h 36 min at the start of September to 12 h 12 min by month's end. Set against the rest of the year, September is Promissão's 4th-clearest and 1st-windiest month. For the whole year in context, see Promissão's year-round climate.
- Daytime high
- 31°
- 3rd warmest
- Overnight low
- 19°
- 5th coldest
- Rainfall
- 57 mm
- 6.9 wet days
- Daylight
- 11 h 54 min
- 7:17 AM – 7:10 PM
- Cloud cover
- 41%
- 4th clearest
- Wind
- 11 km/h
- 1st windiest
- Solar energy
- 5.65 kWh/m²
- Travel score
- 5.2
- out of 10
Promissão is human settlement in Brazil.
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in September
Day-to-day highs hold fairly steady near 31°C through the month.
A typical September day in Promissão reaches about 31°C in the afternoon and slips back to 19°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 36°C. Set against its neighbours, September runs about 1°C warmer than 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) | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 |
| Avg low (°C) | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 31 | 18 |
| 2 | 31 | 18 |
| 3 | 31 | 18 |
| 4 | 31 | 18 |
| 5 | 31 | 18 |
| 6 | 31 | 18 |
| 7 | 31 | 18 |
| 8 | 31 | 18 |
| 9 | 31 | 18 |
| 10 | 31 | 18 |
| 11 | 31 | 18 |
| 12 | 31 | 19 |
| 13 | 31 | 19 |
| 14 | 31 | 19 |
| 15 | 31 | 19 |
| 16 | 31 | 19 |
| 17 | 31 | 19 |
| 18 | 31 | 19 |
| 19 | 31 | 19 |
| 20 | 31 | 19 |
| 21 | 31 | 19 |
| 22 | 31 | 19 |
| 23 | 31 | 19 |
| 24 | 31 | 19 |
| 25 | 31 | 19 |
| 26 | 31 | 19 |
| 27 | 31 | 19 |
| 28 | 31 | 19 |
| 29 | 31 | 19 |
| 30 | 31 | 19 |
How September really feels in Promissão
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.
Promissão weather by month
How September compares with the rest of the year at a glance. September is the 3rd-warmest and 8th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 30° / 22° | 236 | 21.7 | 13.2 | 3.4 |
| Feb | 31° / 22° | 170 | 18.1 | 12.7 | 3.6 |
| Mar | 30° / 22° | 133 | 16.7 | 12.2 | 4.1 |
| Apr | 30° / 20° | 58 | 7 | 11.5 | 5.7 |
| May | 27° / 17° | 49 | 5.3 | 11 | 7.3 |
| Jun | 27° / 16° | 30 | 3.6 | 10.7 | 7.9 |
| Jul | 27° / 15° | 20 | 2.9 | 10.8 | 8.0 |
| Aug | 29° / 17° | 24 | 3.1 | 11.3 | 6.6 |
| Sep | 31° / 19° | 57 | 6.9 | 11.9 | 5.2 |
| Oct | 31° / 20° | 102 | 11.1 | 12.5 | 4.2 |
| Nov | 31° / 21° | 140 | 14.2 | 13 | 4.0 |
| Dec | 31° / 22° | 187 | 19.5 | 13.3 | 3.6 |
Cloud cover in September
The sky is clear or mostly clear about 55% of the time in September.
Beyond those clear spells, partly cloudy skies cover about 11% of September, with mostly cloudy or overcast conditions the remaining 34%. Skies tend to cloud over 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 (%) | 77 | 77 | 76 | 75 | 74 | 73 | 72 | 72 | 70 | 69 | 69 | 68 | 67 | 66 | 65 | 65 | 65 | 64 | 63 | 63 | 62 | 61 | 60 | 59 | 58 | 58 | 57 | 57 | 55 | 55 |
| Cloudier (%) | 23 | 23 | 24 | 25 | 26 | 27 | 28 | 28 | 30 | 31 | 31 | 32 | 33 | 34 | 35 | 35 | 35 | 36 | 37 | 37 | 38 | 39 | 40 | 41 | 42 | 42 | 43 | 43 | 45 | 45 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 77 | 23 |
| 2 | 77 | 23 |
| 3 | 76 | 24 |
| 4 | 75 | 25 |
| 5 | 74 | 26 |
| 6 | 73 | 27 |
| 7 | 72 | 28 |
| 8 | 72 | 28 |
| 9 | 70 | 30 |
| 10 | 69 | 31 |
| 11 | 69 | 31 |
| 12 | 68 | 32 |
| 13 | 67 | 33 |
| 14 | 66 | 34 |
| 15 | 65 | 35 |
| 16 | 65 | 35 |
| 17 | 65 | 35 |
| 18 | 64 | 36 |
| 19 | 63 | 37 |
| 20 | 63 | 37 |
| 21 | 62 | 38 |
| 22 | 61 | 39 |
| 23 | 60 | 40 |
| 24 | 59 | 41 |
| 25 | 58 | 42 |
| 26 | 58 | 42 |
| 27 | 57 | 43 |
| 28 | 57 | 43 |
| 29 | 55 | 45 |
| 30 | 55 | 45 |
Chance of precipitation in September
Promissão gets around 57 mm of rain over 6.9 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 23% and peaks near 32% 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 (%) | 15 | 16 | 16 | 17 | 17 | 18 | 18 | 19 | 19 | 20 | 20 | 21 | 21 | 21 | 22 | 22 | 23 | 23 | 24 | 25 | 25 | 26 | 27 | 28 | 29 | 30 | 30 | 31 | 31 | 32 |
| Rain chance (%) | |
|---|---|
| 1 | 15 |
| 2 | 16 |
| 3 | 16 |
| 4 | 17 |
| 5 | 17 |
| 6 | 18 |
| 7 | 18 |
| 8 | 19 |
| 9 | 19 |
| 10 | 20 |
| 11 | 20 |
| 12 | 21 |
| 13 | 21 |
| 14 | 21 |
| 15 | 22 |
| 16 | 22 |
| 17 | 23 |
| 18 | 23 |
| 19 | 24 |
| 20 | 25 |
| 21 | 25 |
| 22 | 26 |
| 23 | 27 |
| 24 | 28 |
| 25 | 29 |
| 26 | 30 |
| 27 | 30 |
| 28 | 31 |
| 29 | 31 |
| 30 | 32 |
Humidity in September
Most of September feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, September lands in the dry band about 30% of days. Sticky, muggy-or-worse air turns up on roughly 16% 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 50 | 49 | 48 | 47 | 46 | 45 | 44 | 43 | 41 | 40 | 38 | 36 | 34 | 32 | 30 | 29 | 27 | 25 | 24 | 22 | 21 | 20 | 18 | 17 | 16 | 16 | 15 | 14 | 14 | 13 |
| Comfortable (%) | 29 | 29 | 28 | 28 | 27 | 27 | 27 | 26 | 26 | 26 | 27 | 27 | 28 | 28 | 29 | 30 | 30 | 31 | 31 | 32 | 31 | 31 | 31 | 31 | 30 | 29 | 28 | 27 | 27 | 26 |
| Humid (%) | 16 | 16 | 17 | 18 | 19 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 26 | 27 | 27 | 28 | 28 | 28 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 30 | 30 | 30 | 30 |
| Muggy (%) | 6 | 6 | 7 | 7 | 8 | 8 | 9 | 9 | 10 | 10 | 11 | 12 | 12 | 13 | 13 | 14 | 15 | 16 | 16 | 17 | 19 | 20 | 21 | 22 | 23 | 25 | 26 | 27 | 28 | 29 |
| Oppressive (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | |
|---|---|---|---|---|---|
| 1 | 50 | 29 | 16 | 6 | 0 |
| 2 | 49 | 29 | 16 | 6 | 0 |
| 3 | 48 | 28 | 17 | 7 | 0 |
| 4 | 47 | 28 | 18 | 7 | 0 |
| 5 | 46 | 27 | 19 | 8 | 0 |
| 6 | 45 | 27 | 19 | 8 | 0 |
| 7 | 44 | 27 | 20 | 9 | 0 |
| 8 | 43 | 26 | 21 | 9 | 0 |
| 9 | 41 | 26 | 22 | 10 | 0 |
| 10 | 40 | 26 | 23 | 10 | 0 |
| 11 | 38 | 27 | 24 | 11 | 0 |
| 12 | 36 | 27 | 25 | 12 | 0 |
| 13 | 34 | 28 | 26 | 12 | 0 |
| 14 | 32 | 28 | 26 | 13 | 0 |
| 15 | 30 | 29 | 27 | 13 | 0 |
| 16 | 29 | 30 | 27 | 14 | 0 |
| 17 | 27 | 30 | 28 | 15 | 0 |
| 18 | 25 | 31 | 28 | 16 | 0 |
| 19 | 24 | 31 | 28 | 16 | 0 |
| 20 | 22 | 32 | 29 | 17 | 0 |
| 21 | 21 | 31 | 29 | 19 | 0 |
| 22 | 20 | 31 | 29 | 20 | 1 |
| 23 | 18 | 31 | 29 | 21 | 1 |
| 24 | 17 | 31 | 29 | 22 | 1 |
| 25 | 16 | 30 | 29 | 23 | 1 |
| 26 | 16 | 29 | 29 | 25 | 1 |
| 27 | 15 | 28 | 30 | 26 | 1 |
| 28 | 14 | 27 | 30 | 27 | 2 |
| 29 | 14 | 27 | 30 | 28 | 2 |
| 30 | 13 | 26 | 30 | 29 | 2 |
Wind in September
Winds average 11 km/h in September, the windiest month of the year.
Across September, daily wind ranges from about 11 km/h on the calmest days to 11 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) | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 |
| 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 | 11 | calm |
| 2 | 11 | calm |
| 3 | 11 | calm |
| 4 | 11 | calm |
| 5 | 11 | calm |
| 6 | 11 | calm |
| 7 | 11 | calm |
| 8 | 11 | calm |
| 9 | 11 | calm |
| 10 | 11 | calm |
| 11 | 11 | calm |
| 12 | 11 | calm |
| 13 | 11 | calm |
| 14 | 11 | calm |
| 15 | 11 | calm |
| 16 | 11 | calm |
| 17 | 11 | calm |
| 18 | 11 | calm |
| 19 | 11 | calm |
| 20 | 11 | calm |
| 21 | 11 | calm |
| 22 | 11 | calm |
| 23 | 11 | calm |
| 24 | 11 | calm |
| 25 | 11 | calm |
| 26 | 11 | calm |
| 27 | 11 | calm |
| 28 | 11 | calm |
| 29 | 11 | calm |
| 30 | 11 | calm |
Sunrise & sunset in September
Daylight runs from about 11 h 36 min at the start of September to 12 h 12 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 36 minutes over September. Sunrise moves from 7:32 AM to 7:03 AM, and sunset from 7:06 PM to 7:14 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) | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.7 | 11.7 | 11.7 | 11.7 | 11.8 | 11.8 | 11.8 | 11.8 | 11.8 | 11.9 | 11.9 | 11.9 | 11.9 | 11.9 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.1 | 12.1 | 12.1 | 12.1 | 12.2 | 12.2 |
| Sunrise (AM) | 7:32 | 7:31 | 7:30 | 7:29 | 7:28 | 7:27 | 7:26 | 7:25 | 7:24 | 7:23 | 7:22 | 7:21 | 7:20 | 7:19 | 7:18 | 7:17 | 7:16 | 7:15 | 7:14 | 7:13 | 7:12 | 7:11 | 7:10 | 7:09 | 7:08 | 7:07 | 7:06 | 7:05 | 7:04 | 7:03 |
| Sunset (PM) | 7:06 | 7:06 | 7:07 | 7:07 | 7:07 | 7:07 | 7:08 | 7:08 | 7:08 | 7:09 | 7:09 | 7:09 | 7:09 | 7:10 | 7:10 | 7:10 | 7:10 | 7:11 | 7:11 | 7:11 | 7:11 | 7:12 | 7:12 | 7:12 | 7:13 | 7:13 | 7:13 | 7:13 | 7:14 | 7:14 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 11.6 | 7:32 | 7:06 |
| 2 | 11.6 | 7:31 | 7:06 |
| 3 | 11.6 | 7:30 | 7:07 |
| 4 | 11.6 | 7:29 | 7:07 |
| 5 | 11.6 | 7:28 | 7:07 |
| 6 | 11.7 | 7:27 | 7:07 |
| 7 | 11.7 | 7:26 | 7:08 |
| 8 | 11.7 | 7:25 | 7:08 |
| 9 | 11.7 | 7:24 | 7:08 |
| 10 | 11.8 | 7:23 | 7:09 |
| 11 | 11.8 | 7:22 | 7:09 |
| 12 | 11.8 | 7:21 | 7:09 |
| 13 | 11.8 | 7:20 | 7:09 |
| 14 | 11.8 | 7:19 | 7:10 |
| 15 | 11.9 | 7:18 | 7:10 |
| 16 | 11.9 | 7:17 | 7:10 |
| 17 | 11.9 | 7:16 | 7:10 |
| 18 | 11.9 | 7:15 | 7:11 |
| 19 | 11.9 | 7:14 | 7:11 |
| 20 | 12.0 | 7:13 | 7:11 |
| 21 | 12.0 | 7:12 | 7:11 |
| 22 | 12.0 | 7:11 | 7:12 |
| 23 | 12.0 | 7:10 | 7:12 |
| 24 | 12.0 | 7:09 | 7:12 |
| 25 | 12.1 | 7:08 | 7:13 |
| 26 | 12.1 | 7:07 | 7:13 |
| 27 | 12.1 | 7:06 | 7:13 |
| 28 | 12.1 | 7:05 | 7:13 |
| 29 | 12.2 | 7:04 | 7:14 |
| 30 | 12.2 | 7:03 | 7:14 |
Solar energy in September
Average shortwave solar energy reaching the ground each day in September, about 5.65 kWh/m².
For context, solar energy here swings from a low near 3.79 kWh/m² to a high of 6.18 kWh/m² in November across the year — September's 5.65 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) | 5.4 | 5.4 | 5.4 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.6 | 5.6 | 5.6 | 5.6 | 5.6 | 5.6 | 5.7 | 5.7 | 5.7 | 5.7 | 5.7 | 5.7 | 5.8 | 5.8 | 5.8 | 5.8 | 5.8 | 5.8 | 5.8 | 5.8 | 5.8 |
| 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 | 5.4 | Bright |
| 2 | 5.4 | Bright |
| 3 | 5.4 | Bright |
| 4 | 5.5 | Bright |
| 5 | 5.5 | Bright |
| 6 | 5.5 | Bright |
| 7 | 5.5 | Bright |
| 8 | 5.5 | Bright |
| 9 | 5.5 | Bright |
| 10 | 5.6 | Bright |
| 11 | 5.6 | Bright |
| 12 | 5.6 | Bright |
| 13 | 5.6 | Bright |
| 14 | 5.6 | Bright |
| 15 | 5.6 | Bright |
| 16 | 5.7 | Bright |
| 17 | 5.7 | Bright |
| 18 | 5.7 | Bright |
| 19 | 5.7 | Bright |
| 20 | 5.7 | Bright |
| 21 | 5.7 | Bright |
| 22 | 5.8 | Bright |
| 23 | 5.8 | Bright |
| 24 | 5.8 | Bright |
| 25 | 5.8 | Bright |
| 26 | 5.8 | Bright |
| 27 | 5.8 | Bright |
| 28 | 5.8 | Bright |
| 29 | 5.8 | Bright |
| 30 | 5.8 | Bright |
Hazard calendar for Promissão
None of Promissão's seasonal hazards are active in September. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.
Promissão's monsoon runs November–March, when most of the year's rain falls.
Is September a good time to visit Promissão?
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 Promissão for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Promissão in September
From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In September, Promissão sees daytime highs around 31°C and nights near 19°C. Pack light clothes. Worth having: sun protection. About 7 days see rain.
UV index in Promissão in September
Clear-sky midday UV in September 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 Promissão peaks around January 21 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 10 at about 6 (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) | 15 | 15 | 13 | 10 | 7 | 6 | 6 | 8 | 9 | 11 | 13 | 13 |
| Level | Extreme | Extreme | Extreme | Very high | Very high | High | High | Very high | Very high | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 15 | Extreme |
| Feb | 15 | Extreme |
| Mar | 13 | Extreme |
| Apr | 10 | Very high |
| May | 7 | Very high |
| Jun | 6 | High |
| Jul | 6 | High |
| Aug | 8 | Very high |
| Sep | 9 | Very high |
| Oct | 11 | Extreme |
| Nov | 13 | Extreme |
| Dec | 13 | Extreme |
Air quality in Promissão 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 Promissão is worst in September — around 22 µg/m³ PM2.5 (moderate), about 2.8× the cleanest month (November, 8 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 | 9 | 9 | 10 | 11 | 11 | 11 | 18 | 22 | 15 | 8 | 8 |
| Level | Good | Good | Good | Good | Good | Good | Good | Moderate | Moderate | Moderate | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 9 | Good |
| Feb | 9 | Good |
| Mar | 9 | Good |
| Apr | 10 | Good |
| May | 11 | Good |
| Jun | 11 | Good |
| Jul | 11 | Good |
| Aug | 18 | Moderate |
| Sep | 22 | Moderate |
| Oct | 15 | Moderate |
| Nov | 8 | Good |
| Dec | 8 | Good |
Where is Promissão?
Promissão sits at 21.5°S, 49.9°W, 428 m above sea level, in Brazil. The nearest listed city is Lins, 20 km away.
Topography around Promissão
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Promissão.
Within 3 km, the terrain around Promissão has only modest variations in elevation — a maximum elevation change of 73 m around an average of 416 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 155 m; within 80 km, significant variations in elevation — a maximum elevation change of 375 m.
The land around Promissão is covered by cropland (45%) and grassland (22%) within 3 km, cropland (69%) within 16 km, and cropland (57%) and grassland (20%) within 80 km.
Brazil travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type C / N
- 127 / 220 V · 60 Hz
- Prices
- ≈ 46% of US
- price level, 2025
- GDP per capita
- $10,713
- 2025
- Happiness
- 6.6 / 10
- World Happiness, 2025
- Safe drinking water
- 89%
- of population, 2024
- Homicide rate
- 19.3
- per 100k, 2023
- Road deaths
- 16
- per 100k/yr, 2019
- Income group
- Upper middle
- World Bank
- English
- Low
- EF EPI 482
- 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 Promissão (-21.5367°, -49.8581°, elevation 428 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. 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).