Diadema weather in September
In September, Diadema sees average daytime highs of 24°C and overnight lows near 15°C, with 129 mm of rain across 13.9 wet days and about 11.9 hours of daylight. It is the 8th-warmest and 7th-wettest month of the year here.
Day-to-day highs hold fairly steady near 24°C through the month. The sky is clear or mostly clear about 27% of the time in September, and the air most often feels comfortable.
Daylight stretches from about 11 h 30 min at the start of September to 12 h 12 min by month's end. Set against the rest of the year, September is Diadema's 6th-clearest and 2nd-windiest month. For the whole year in context, see Diadema's year-round climate.
- Daytime high
- 24°
- 8th warmest
- Overnight low
- 15°
- 4th coldest
- Rainfall
- 129 mm
- 13.9 wet days
- Daylight
- 11 h 54 min
- 7:05 AM – 6:57 PM
- Cloud cover
- 68%
- 6th clearest
- Wind
- 9 km/h
- 2nd windiest
- Solar energy
- 4.53 kWh/m²
- Travel score
- 6.2
- out of 10
Diadema is human settlement in Brazil.
- Air quality
- Good
- PM10 24.5 µg/m³ · 2019
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in September
Day-to-day highs hold fairly steady near 24°C through the month.
A typical September day in Diadema reaches about 24°C in the afternoon and slips back to 15°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 30°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) | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 |
| Avg low (°C) | 14 | 14 | 14 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 16 | 16 | 16 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 24 | 14 |
| 2 | 24 | 14 |
| 3 | 24 | 14 |
| 4 | 24 | 15 |
| 5 | 24 | 15 |
| 6 | 24 | 15 |
| 7 | 24 | 15 |
| 8 | 24 | 15 |
| 9 | 24 | 15 |
| 10 | 24 | 15 |
| 11 | 24 | 15 |
| 12 | 24 | 15 |
| 13 | 24 | 15 |
| 14 | 24 | 15 |
| 15 | 24 | 15 |
| 16 | 24 | 15 |
| 17 | 24 | 15 |
| 18 | 24 | 15 |
| 19 | 24 | 15 |
| 20 | 24 | 15 |
| 21 | 24 | 15 |
| 22 | 24 | 15 |
| 23 | 24 | 15 |
| 24 | 24 | 15 |
| 25 | 24 | 15 |
| 26 | 24 | 15 |
| 27 | 24 | 15 |
| 28 | 24 | 16 |
| 29 | 24 | 16 |
| 30 | 24 | 16 |
Diadema weather by month
How September compares with the rest of the year at a glance. September is the 8th-warmest and 7th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 27° / 20° | 337 | 26.6 | 13.3 | 3.9 |
| Feb | 28° / 20° | 275 | 23 | 12.8 | 4.0 |
| Mar | 27° / 19° | 271 | 24.6 | 12.2 | 4.3 |
| Apr | 25° / 18° | 114 | 15.8 | 11.5 | 5.7 |
| May | 23° / 15° | 96 | 12.1 | 10.9 | 6.4 |
| Jun | 22° / 14° | 70 | 8.4 | 10.6 | 7.0 |
| Jul | 22° / 13° | 84 | 8.3 | 10.7 | 7.1 |
| Aug | 23° / 14° | 68 | 8.8 | 11.2 | 7.1 |
| Sep | 24° / 15° | 129 | 13.9 | 11.9 | 6.2 |
| Oct | 25° / 17° | 157 | 17.8 | 12.6 | 5.4 |
| Nov | 25° / 18° | 209 | 20.7 | 13.1 | 4.9 |
| Dec | 27° / 19° | 251 | 23.9 | 13.4 | 4.3 |
Cloud cover in September
The sky is clear or mostly clear about 27% of the time in September.
Beyond those clear spells, partly cloudy skies cover about 9% of September, with mostly cloudy or overcast conditions the remaining 64%. 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 (%) | 50 | 49 | 49 | 48 | 47 | 46 | 45 | 44 | 42 | 41 | 40 | 39 | 38 | 38 | 36 | 36 | 34 | 33 | 32 | 32 | 30 | 29 | 28 | 27 | 26 | 26 | 25 | 24 | 23 | 24 |
| Cloudier (%) | 50 | 51 | 51 | 52 | 53 | 54 | 55 | 56 | 58 | 59 | 60 | 61 | 62 | 62 | 64 | 64 | 66 | 67 | 68 | 68 | 70 | 71 | 72 | 73 | 74 | 74 | 75 | 76 | 77 | 76 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 50 | 50 |
| 2 | 49 | 51 |
| 3 | 49 | 51 |
| 4 | 48 | 52 |
| 5 | 47 | 53 |
| 6 | 46 | 54 |
| 7 | 45 | 55 |
| 8 | 44 | 56 |
| 9 | 42 | 58 |
| 10 | 41 | 59 |
| 11 | 40 | 60 |
| 12 | 39 | 61 |
| 13 | 38 | 62 |
| 14 | 38 | 62 |
| 15 | 36 | 64 |
| 16 | 36 | 64 |
| 17 | 34 | 66 |
| 18 | 33 | 67 |
| 19 | 32 | 68 |
| 20 | 32 | 68 |
| 21 | 30 | 70 |
| 22 | 29 | 71 |
| 23 | 28 | 72 |
| 24 | 27 | 73 |
| 25 | 26 | 74 |
| 26 | 26 | 74 |
| 27 | 25 | 75 |
| 28 | 24 | 76 |
| 29 | 23 | 77 |
| 30 | 24 | 76 |
Chance of precipitation in September
Diadema gets around 129 mm of rain over 13.9 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 45% and peaks near 57% 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 (%) | 35 | 36 | 36 | 37 | 37 | 38 | 38 | 39 | 39 | 40 | 40 | 40 | 41 | 41 | 42 | 43 | 44 | 46 | 47 | 49 | 50 | 51 | 52 | 54 | 55 | 55 | 56 | 57 | 57 | 57 |
| Rain chance (%) | |
|---|---|
| 1 | 35 |
| 2 | 36 |
| 3 | 36 |
| 4 | 37 |
| 5 | 37 |
| 6 | 38 |
| 7 | 38 |
| 8 | 39 |
| 9 | 39 |
| 10 | 40 |
| 11 | 40 |
| 12 | 40 |
| 13 | 41 |
| 14 | 41 |
| 15 | 42 |
| 16 | 43 |
| 17 | 44 |
| 18 | 46 |
| 19 | 47 |
| 20 | 49 |
| 21 | 50 |
| 22 | 51 |
| 23 | 52 |
| 24 | 54 |
| 25 | 55 |
| 26 | 55 |
| 27 | 56 |
| 28 | 57 |
| 29 | 57 |
| 30 | 57 |
Humidity in September
Most of September feels comfortable — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, September lands in the comfortable band about 42% of days. It rarely turns muggy — the humid and sticky bands barely register.
| 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 (%) | 19 | 18 | 17 | 17 | 16 | 15 | 15 | 14 | 14 | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 10 | 10 | 10 |
| Comfortable (%) | 51 | 51 | 51 | 50 | 50 | 50 | 49 | 48 | 47 | 47 | 46 | 45 | 44 | 44 | 43 | 42 | 41 | 40 | 39 | 38 | 38 | 37 | 36 | 36 | 35 | 34 | 33 | 32 | 31 | 31 |
| Humid (%) | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 39 | 40 | 41 | 42 | 43 | 43 | 44 | 44 | 44 | 45 | 45 | 45 | 46 | 46 | 46 | 47 | 47 | 47 | 47 |
| Muggy (%) | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 3 | 3 | 3 | 3 | 4 | 4 | 4 | 4 | 5 | 5 | 6 | 6 | 7 | 8 | 8 | 9 | 10 | 11 | 11 | 12 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | |
|---|---|---|---|---|
| 1 | 19 | 51 | 29 | 1 |
| 2 | 18 | 51 | 30 | 1 |
| 3 | 17 | 51 | 31 | 1 |
| 4 | 17 | 50 | 32 | 1 |
| 5 | 16 | 50 | 33 | 1 |
| 6 | 15 | 50 | 34 | 1 |
| 7 | 15 | 49 | 35 | 2 |
| 8 | 14 | 48 | 36 | 2 |
| 9 | 14 | 47 | 37 | 2 |
| 10 | 13 | 47 | 38 | 2 |
| 11 | 13 | 46 | 39 | 3 |
| 12 | 12 | 45 | 39 | 3 |
| 13 | 12 | 44 | 40 | 3 |
| 14 | 12 | 44 | 41 | 3 |
| 15 | 12 | 43 | 42 | 4 |
| 16 | 12 | 42 | 43 | 4 |
| 17 | 12 | 41 | 43 | 4 |
| 18 | 12 | 40 | 44 | 4 |
| 19 | 12 | 39 | 44 | 5 |
| 20 | 12 | 38 | 44 | 5 |
| 21 | 12 | 38 | 45 | 6 |
| 22 | 12 | 37 | 45 | 6 |
| 23 | 12 | 36 | 45 | 7 |
| 24 | 11 | 36 | 46 | 8 |
| 25 | 11 | 35 | 46 | 8 |
| 26 | 11 | 34 | 46 | 9 |
| 27 | 11 | 33 | 47 | 10 |
| 28 | 10 | 32 | 47 | 11 |
| 29 | 10 | 31 | 47 | 11 |
| 30 | 10 | 31 | 47 | 12 |
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 30 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 42 minutes over September. Sunrise moves from 7:21 AM to 6:50 AM, and sunset from 6:52 PM to 7:02 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) | 11.5 | 11.5 | 11.6 | 11.6 | 11.6 | 11.6 | 11.7 | 11.7 | 11.7 | 11.7 | 11.7 | 11.8 | 11.8 | 11.8 | 11.8 | 11.9 | 11.9 | 11.9 | 11.9 | 12.0 | 12.0 | 12.0 | 12.0 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.2 | 12.2 |
| Sunrise (AM) | 7:21 | 7:20 | 7:19 | 7:18 | 7:17 | 7:16 | 7:14 | 7:13 | 7:12 | 7:11 | 7:10 | 7:09 | 7:08 | 7:07 | 7:06 | 7:05 | 7:04 | 7:03 | 7:02 | 7:01 | 6:59 | 6:58 | 6:57 | 6:56 | 6:55 | 6:54 | 6:53 | 6:52 | 6:51 | 6:50 |
| Sunset (PM) | 6:52 | 6:52 | 6:52 | 6:53 | 6:53 | 6:53 | 6:54 | 6:54 | 6:54 | 6:55 | 6:55 | 6:55 | 6:56 | 6:56 | 6:56 | 6:57 | 6:57 | 6:57 | 6:58 | 6:58 | 6:58 | 6:59 | 6:59 | 6:59 | 7:00 | 7:00 | 7:01 | 7:01 | 7:01 | 7:02 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 11.5 | 7:21 | 6:52 |
| 2 | 11.5 | 7:20 | 6:52 |
| 3 | 11.6 | 7:19 | 6:52 |
| 4 | 11.6 | 7:18 | 6:53 |
| 5 | 11.6 | 7:17 | 6:53 |
| 6 | 11.6 | 7:16 | 6:53 |
| 7 | 11.7 | 7:14 | 6:54 |
| 8 | 11.7 | 7:13 | 6:54 |
| 9 | 11.7 | 7:12 | 6:54 |
| 10 | 11.7 | 7:11 | 6:55 |
| 11 | 11.7 | 7:10 | 6:55 |
| 12 | 11.8 | 7:09 | 6:55 |
| 13 | 11.8 | 7:08 | 6:56 |
| 14 | 11.8 | 7:07 | 6:56 |
| 15 | 11.8 | 7:06 | 6:56 |
| 16 | 11.9 | 7:05 | 6:57 |
| 17 | 11.9 | 7:04 | 6:57 |
| 18 | 11.9 | 7:03 | 6:57 |
| 19 | 11.9 | 7:02 | 6:58 |
| 20 | 12.0 | 7:01 | 6:58 |
| 21 | 12.0 | 6:59 | 6:58 |
| 22 | 12.0 | 6:58 | 6:59 |
| 23 | 12.0 | 6:57 | 6:59 |
| 24 | 12.1 | 6:56 | 6:59 |
| 25 | 12.1 | 6:55 | 7:00 |
| 26 | 12.1 | 6:54 | 7:00 |
| 27 | 12.1 | 6:53 | 7:01 |
| 28 | 12.1 | 6:52 | 7:01 |
| 29 | 12.2 | 6:51 | 7:01 |
| 30 | 12.2 | 6:50 | 7:02 |
Solar energy in September
Average shortwave solar energy reaching the ground each day in September, about 4.53 kWh/m².
For context, solar energy here swings from a low near 3.21 kWh/m² to a high of 5.74 kWh/m² in December across the year — September's 4.53 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) | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 | 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 | 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 | 4.5 | Bright |
| 2 | 4.5 | Bright |
| 3 | 4.5 | Bright |
| 4 | 4.5 | Bright |
| 5 | 4.5 | Bright |
| 6 | 4.5 | Bright |
| 7 | 4.5 | Bright |
| 8 | 4.5 | Bright |
| 9 | 4.5 | Bright |
| 10 | 4.5 | Bright |
| 11 | 4.5 | Bright |
| 12 | 4.5 | Bright |
| 13 | 4.5 | Bright |
| 14 | 4.5 | Bright |
| 15 | 4.6 | Bright |
| 16 | 4.6 | Bright |
| 17 | 4.6 | 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 Diadema
None of Diadema's seasonal hazards are active in September. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.
Diadema's rainy season runs October–March, when most of the year's rain falls.
Is September a good time to visit Diadema?
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 Diadema for sightseeing.
What to pack for Diadema in September
From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In September, Diadema sees daytime highs around 24°C and nights near 15°C. Pack rain gear. Worth having: light clothes and sun protection. About 14 days see rain.
Sea temperature near Diadema in September
The nearest coast averages about 21°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 February at about 27°C and coldest in August near 20°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 | 26 | 24 | 22 | 21 | 20 | 21 | 22 | 23 | 25 |
| Comfort | Warm | Warm | Warm | Warm | Refreshing | Refreshing | Refreshing | Refreshing | Refreshing | Refreshing | Refreshing | Warm |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 27 | Warm |
| Feb | 27 | Warm |
| Mar | 27 | Warm |
| Apr | 26 | Warm |
| May | 24 | Refreshing |
| Jun | 22 | Refreshing |
| Jul | 21 | Refreshing |
| Aug | 20 | Refreshing |
| Sep | 21 | Refreshing |
| Oct | 22 | Refreshing |
| Nov | 23 | Refreshing |
| Dec | 25 | Warm |
UV index in Diadema in September
Clear-sky midday UV in September peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Diadema peaks around January 22 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 13 at about 5 (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 | 11 | 9 | 7 | 6 | 5 | 8 | 8 | 10 | 12 | 14 |
| Level | Extreme | Extreme | Extreme | Very high | High | High | Moderate | Very high | Very high | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 15 | Extreme |
| Feb | 15 | Extreme |
| Mar | 11 | Extreme |
| Apr | 9 | Very high |
| May | 7 | High |
| Jun | 6 | High |
| Jul | 5 | Moderate |
| Aug | 8 | Very high |
| Sep | 8 | Very high |
| Oct | 10 | Extreme |
| Nov | 12 | Extreme |
| Dec | 14 | Extreme |
Air quality in Diadema 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 Diadema is worst in July — around 52 µg/m³ PM2.5 (poor), about 2.1× the cleanest month (February, 24 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) | 25 | 24 | 26 | 28 | 36 | 49 | 52 | 47 | 41 | 31 | 25 | 26 |
| Level | Moderate | Moderate | Moderate | Moderate | Poor | Poor | Poor | Poor | Poor | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 25 | Moderate |
| Feb | 24 | Moderate |
| Mar | 26 | Moderate |
| Apr | 28 | Moderate |
| May | 36 | Poor |
| Jun | 49 | Poor |
| Jul | 52 | Poor |
| Aug | 47 | Poor |
| Sep | 41 | Poor |
| Oct | 31 | Moderate |
| Nov | 25 | Moderate |
| Dec | 26 | Moderate |
Where is Diadema?
Diadema sits at 23.7°S, 46.6°W, 784 m above sea level, in Brazil. The nearest listed city is Pedreira, 4.0 km away.
Topography around Diadema
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Diadema.
Within 3 km, the terrain around Diadema has only modest variations in elevation — a maximum elevation change of 119 m around an average of 796 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 244 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,434 m.
The land around Diadema is covered by artificial surfaces (87%) within 3 km, artificial surfaces (62%) and trees (22%) within 16 km, and trees (54%) and water (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 Diadema (-23.6861°, -46.6228°, elevation 784 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. 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).