Guaratuba weather in September
In September, Guaratuba sees average daytime highs of 22°C and overnight lows near 17°C, with 133 mm of rain across 13.9 wet days and about 11.8 hours of daylight. It is the 9th-warmest and 7th-wettest month of the year here.
Day-to-day highs hold fairly steady near 22°C through the month. The sky is clear or mostly clear about 17% of the time in September, and the air most often feels humid.
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 Guaratuba's 8th-clearest and 4th-windiest month. For the whole year in context, see Guaratuba's year-round climate.
- Daytime high
- 22°
- 9th warmest
- Overnight low
- 17°
- 4th coldest
- Rainfall
- 133 mm
- 13.9 wet days
- Daylight
- 11 h 54 min
- 7:13 AM – 7:04 PM
- Cloud cover
- 73%
- 8th clearest
- Wind
- 11 km/h
- 4th windiest
- Solar energy
- 3.62 kWh/m²
- Travel score
- 5.8
- out of 10
Guaratuba is 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 22°C through the month.
A typical September day in Guaratuba reaches about 22°C in the afternoon and slips back to 17°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 19°C and 25°C. Set against its neighbours, September runs about 1°C warmer than 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) | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 |
| Avg low (°C) | 16 | 16 | 16 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 18 | 18 | 18 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 22 | 16 |
| 2 | 22 | 16 |
| 3 | 22 | 16 |
| 4 | 22 | 17 |
| 5 | 22 | 17 |
| 6 | 22 | 17 |
| 7 | 22 | 17 |
| 8 | 22 | 17 |
| 9 | 22 | 17 |
| 10 | 22 | 17 |
| 11 | 22 | 17 |
| 12 | 22 | 17 |
| 13 | 22 | 17 |
| 14 | 22 | 17 |
| 15 | 22 | 17 |
| 16 | 22 | 17 |
| 17 | 22 | 17 |
| 18 | 22 | 17 |
| 19 | 22 | 17 |
| 20 | 22 | 17 |
| 21 | 22 | 17 |
| 22 | 22 | 17 |
| 23 | 22 | 17 |
| 24 | 22 | 17 |
| 25 | 22 | 17 |
| 26 | 22 | 17 |
| 27 | 22 | 17 |
| 28 | 22 | 18 |
| 29 | 22 | 18 |
| 30 | 22 | 18 |
Guaratuba weather by month
How September compares with the rest of the year at a glance. September is the 9th-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 | 28° / 23° | 271 | 23.3 | 13.4 | 4.1 |
| Feb | 28° / 23° | 249 | 20.6 | 12.9 | 4.1 |
| Mar | 27° / 22° | 206 | 21.4 | 12.2 | 4.7 |
| Apr | 26° / 20° | 119 | 14.2 | 11.4 | 6.0 |
| May | 23° / 18° | 115 | 12.7 | 10.8 | 6.4 |
| Jun | 22° / 16° | 98 | 10.1 | 10.4 | 6.5 |
| Jul | 21° / 15° | 89 | 9.9 | 10.5 | 6.4 |
| Aug | 21° / 16° | 81 | 9.4 | 11.1 | 6.6 |
| Sep | 22° / 17° | 133 | 13.9 | 11.8 | 5.8 |
| Oct | 23° / 19° | 136 | 16.4 | 12.6 | 5.5 |
| Nov | 25° / 20° | 153 | 16.6 | 13.3 | 5.5 |
| Dec | 27° / 22° | 186 | 19.2 | 13.6 | 5.0 |
Cloud cover in September
The sky is clear or mostly clear about 17% of the time in September.
Beyond those clear spells, partly cloudy skies cover about 12% of September, with mostly cloudy or overcast conditions the remaining 71%. 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 (%) | 43 | 41 | 40 | 38 | 36 | 35 | 34 | 31 | 31 | 30 | 30 | 28 | 28 | 28 | 27 | 27 | 27 | 28 | 27 | 27 | 26 | 26 | 26 | 25 | 25 | 25 | 23 | 23 | 23 | 22 |
| Cloudier (%) | 57 | 59 | 60 | 62 | 64 | 65 | 66 | 69 | 69 | 70 | 70 | 72 | 72 | 72 | 73 | 73 | 73 | 72 | 73 | 73 | 74 | 74 | 74 | 75 | 75 | 75 | 77 | 77 | 77 | 78 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 43 | 57 |
| 2 | 41 | 59 |
| 3 | 40 | 60 |
| 4 | 38 | 62 |
| 5 | 36 | 64 |
| 6 | 35 | 65 |
| 7 | 34 | 66 |
| 8 | 31 | 69 |
| 9 | 31 | 69 |
| 10 | 30 | 70 |
| 11 | 30 | 70 |
| 12 | 28 | 72 |
| 13 | 28 | 72 |
| 14 | 28 | 72 |
| 15 | 27 | 73 |
| 16 | 27 | 73 |
| 17 | 27 | 73 |
| 18 | 28 | 72 |
| 19 | 27 | 73 |
| 20 | 27 | 73 |
| 21 | 26 | 74 |
| 22 | 26 | 74 |
| 23 | 26 | 74 |
| 24 | 25 | 75 |
| 25 | 25 | 75 |
| 26 | 25 | 75 |
| 27 | 23 | 77 |
| 28 | 23 | 77 |
| 29 | 23 | 77 |
| 30 | 22 | 78 |
Chance of precipitation in September
Guaratuba gets around 133 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 56% 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 | 37 | 38 | 39 | 39 | 40 | 40 | 41 | 41 | 42 | 42 | 43 | 43 | 44 | 44 | 45 | 46 | 47 | 48 | 49 | 50 | 51 | 52 | 53 | 54 | 55 | 55 | 56 | 56 |
| Rain chance (%) | |
|---|---|
| 1 | 35 |
| 2 | 36 |
| 3 | 37 |
| 4 | 38 |
| 5 | 39 |
| 6 | 39 |
| 7 | 40 |
| 8 | 40 |
| 9 | 41 |
| 10 | 41 |
| 11 | 42 |
| 12 | 42 |
| 13 | 43 |
| 14 | 43 |
| 15 | 44 |
| 16 | 44 |
| 17 | 45 |
| 18 | 46 |
| 19 | 47 |
| 20 | 48 |
| 21 | 49 |
| 22 | 50 |
| 23 | 51 |
| 24 | 52 |
| 25 | 53 |
| 26 | 54 |
| 27 | 55 |
| 28 | 55 |
| 29 | 56 |
| 30 | 56 |
Humidity in September
Most of September feels humid — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, September lands in the humid band about 41% of days. Sticky, muggy-or-worse air turns up on roughly 24% 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 (%) | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 14 | 14 | 14 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 10 | 10 | 9 | 9 | 9 | 8 | 8 |
| Comfortable (%) | 24 | 24 | 24 | 23 | 23 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 22 | 22 | 22 | 22 | 21 |
| Humid (%) | 42 | 42 | 41 | 41 | 41 | 41 | 40 | 40 | 41 | 41 | 41 | 41 | 41 | 41 | 41 | 41 | 41 | 41 | 41 | 41 | 41 | 41 | 41 | 42 | 42 | 42 | 42 | 42 | 41 | 41 |
| Muggy (%) | 18 | 19 | 20 | 21 | 21 | 22 | 22 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 24 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 24 | 24 | 25 | 25 | 26 | 27 | 28 |
| Oppressive (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | |
|---|---|---|---|---|---|
| 1 | 15 | 24 | 42 | 18 | 0 |
| 2 | 15 | 24 | 42 | 19 | 0 |
| 3 | 15 | 24 | 41 | 20 | 0 |
| 4 | 15 | 23 | 41 | 21 | 0 |
| 5 | 15 | 23 | 41 | 21 | 0 |
| 6 | 15 | 22 | 41 | 22 | 0 |
| 7 | 15 | 22 | 40 | 22 | 0 |
| 8 | 15 | 22 | 40 | 23 | 0 |
| 9 | 14 | 22 | 41 | 23 | 0 |
| 10 | 14 | 22 | 41 | 23 | 0 |
| 11 | 14 | 22 | 41 | 23 | 0 |
| 12 | 13 | 22 | 41 | 23 | 0 |
| 13 | 13 | 22 | 41 | 23 | 0 |
| 14 | 13 | 22 | 41 | 23 | 1 |
| 15 | 12 | 22 | 41 | 23 | 1 |
| 16 | 12 | 22 | 41 | 24 | 1 |
| 17 | 12 | 22 | 41 | 23 | 1 |
| 18 | 12 | 23 | 41 | 23 | 1 |
| 19 | 12 | 23 | 41 | 23 | 1 |
| 20 | 12 | 23 | 41 | 23 | 1 |
| 21 | 11 | 23 | 41 | 23 | 1 |
| 22 | 11 | 23 | 41 | 23 | 1 |
| 23 | 11 | 23 | 41 | 23 | 1 |
| 24 | 10 | 23 | 42 | 24 | 2 |
| 25 | 10 | 23 | 42 | 24 | 2 |
| 26 | 9 | 22 | 42 | 25 | 2 |
| 27 | 9 | 22 | 42 | 25 | 2 |
| 28 | 9 | 22 | 42 | 26 | 2 |
| 29 | 8 | 22 | 41 | 27 | 2 |
| 30 | 8 | 21 | 41 | 28 | 2 |
Wind in September
Winds average 11 km/h in September.
Across September, daily wind ranges from about 10 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) | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 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 | 10 | calm |
| 2 | 10 | calm |
| 3 | 10 | calm |
| 4 | 10 | calm |
| 5 | 10 | calm |
| 6 | 10 | calm |
| 7 | 10 | calm |
| 8 | 10 | calm |
| 9 | 10 | calm |
| 10 | 10 | calm |
| 11 | 10 | calm |
| 12 | 10 | 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 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 7:30 AM to 6:57 AM, and sunset from 6:58 PM to 7:10 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 | 11.5 | 11.5 | 11.6 | 11.6 | 11.6 | 11.6 | 11.7 | 11.7 | 11.7 | 11.7 | 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 | 12.2 | 12.2 | 12.2 |
| Sunrise (AM) | 7:30 | 7:29 | 7:28 | 7:27 | 7:26 | 7:25 | 7:23 | 7:22 | 7:21 | 7:20 | 7:19 | 7:18 | 7:17 | 7:15 | 7:14 | 7:13 | 7:12 | 7:11 | 7:10 | 7:09 | 7:07 | 7:06 | 7:05 | 7:04 | 7:03 | 7:02 | 7:01 | 6:59 | 6:58 | 6:57 |
| Sunset (PM) | 6:58 | 6:58 | 6:59 | 6:59 | 7:00 | 7:00 | 7:00 | 7:01 | 7:01 | 7:02 | 7:02 | 7:02 | 7:03 | 7:03 | 7:04 | 7:04 | 7:05 | 7:05 | 7:05 | 7:06 | 7:06 | 7:07 | 7:07 | 7:07 | 7:08 | 7:08 | 7:09 | 7:09 | 7:10 | 7:10 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 11.5 | 7:30 | 6:58 |
| 2 | 11.5 | 7:29 | 6:58 |
| 3 | 11.5 | 7:28 | 6:59 |
| 4 | 11.5 | 7:27 | 6:59 |
| 5 | 11.6 | 7:26 | 7:00 |
| 6 | 11.6 | 7:25 | 7:00 |
| 7 | 11.6 | 7:23 | 7:00 |
| 8 | 11.6 | 7:22 | 7:01 |
| 9 | 11.7 | 7:21 | 7:01 |
| 10 | 11.7 | 7:20 | 7:02 |
| 11 | 11.7 | 7:19 | 7:02 |
| 12 | 11.7 | 7:18 | 7:02 |
| 13 | 11.8 | 7:17 | 7:03 |
| 14 | 11.8 | 7:15 | 7:03 |
| 15 | 11.8 | 7:14 | 7:04 |
| 16 | 11.9 | 7:13 | 7:04 |
| 17 | 11.9 | 7:12 | 7:05 |
| 18 | 11.9 | 7:11 | 7:05 |
| 19 | 11.9 | 7:10 | 7:05 |
| 20 | 12.0 | 7:09 | 7:06 |
| 21 | 12.0 | 7:07 | 7:06 |
| 22 | 12.0 | 7:06 | 7:07 |
| 23 | 12.0 | 7:05 | 7:07 |
| 24 | 12.1 | 7:04 | 7:07 |
| 25 | 12.1 | 7:03 | 7:08 |
| 26 | 12.1 | 7:02 | 7:08 |
| 27 | 12.1 | 7:01 | 7:09 |
| 28 | 12.2 | 6:59 | 7:09 |
| 29 | 12.2 | 6:58 | 7:10 |
| 30 | 12.2 | 6:57 | 7:10 |
Solar energy in September
Average shortwave solar energy reaching the ground each day in September, about 3.62 kWh/m².
For context, solar energy here swings from a low near 2.57 kWh/m² to a high of 5.51 kWh/m² in December across the year — September's 3.62 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) | 3.6 | 3.6 | 3.6 | 3.6 | 3.6 | 3.6 | 3.6 | 3.6 | 3.6 | 3.6 | 3.6 | 3.6 | 3.6 | 3.6 | 3.6 | 3.6 | 3.6 | 3.6 | 3.6 | 3.7 | 3.7 | 3.7 | 3.7 | 3.7 | 3.7 | 3.7 | 3.7 | 3.7 | 3.8 | 3.8 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 3.6 | Moderate |
| 2 | 3.6 | Moderate |
| 3 | 3.6 | Moderate |
| 4 | 3.6 | Moderate |
| 5 | 3.6 | Moderate |
| 6 | 3.6 | Moderate |
| 7 | 3.6 | Moderate |
| 8 | 3.6 | Moderate |
| 9 | 3.6 | Moderate |
| 10 | 3.6 | Moderate |
| 11 | 3.6 | Moderate |
| 12 | 3.6 | Moderate |
| 13 | 3.6 | Moderate |
| 14 | 3.6 | Moderate |
| 15 | 3.6 | Moderate |
| 16 | 3.6 | Moderate |
| 17 | 3.6 | Moderate |
| 18 | 3.6 | Moderate |
| 19 | 3.6 | Moderate |
| 20 | 3.7 | Moderate |
| 21 | 3.7 | Moderate |
| 22 | 3.7 | Moderate |
| 23 | 3.7 | Moderate |
| 24 | 3.7 | Moderate |
| 25 | 3.7 | Moderate |
| 26 | 3.7 | Moderate |
| 27 | 3.7 | Moderate |
| 28 | 3.7 | Moderate |
| 29 | 3.8 | Moderate |
| 30 | 3.8 | Moderate |
Is September a good time to visit Guaratuba?
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 Guaratuba for sightseeing.
What to pack for Guaratuba in September
From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In September, Guaratuba sees daytime highs around 22°C and nights near 17°C. Pack rain gear. About 14 days see rain.
Sea temperature near Guaratuba in September
The nearest coast averages about 20°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 20 km away) is warmest in February at about 27°C and coldest in August near 19°C.
It's comfortable for a long swim from Sep 20 to Jun 28 — about 9.3 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 27 | 27 | 27 | 25 | 23 | 21 | 19 | 19 | 20 | 21 | 23 | 25 |
| Comfort | Warm | Warm | Warm | Warm | Refreshing | Refreshing | Cool | Cool | Cool | Refreshing | Refreshing | Warm |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 27 | Warm |
| Feb | 27 | Warm |
| Mar | 27 | Warm |
| Apr | 25 | Warm |
| May | 23 | Refreshing |
| Jun | 21 | Refreshing |
| Jul | 19 | Cool |
| Aug | 19 | Cool |
| Sep | 20 | Cool |
| Oct | 21 | Refreshing |
| Nov | 23 | Refreshing |
| Dec | 25 | Warm |
UV index in Guaratuba in September
Clear-sky midday UV in September peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Guaratuba peaks around January 19 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 12 at about 5 (moderate).
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 | 13 | 11 | 8 | 6 | 5 | 5 | 6 | 8 | 10 | 12 | 13 |
| Level | Extreme | Extreme | Extreme | Very high | High | High | Moderate | High | Very high | Very high | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 14 | Extreme |
| Feb | 13 | Extreme |
| Mar | 11 | Extreme |
| Apr | 8 | Very high |
| May | 6 | High |
| Jun | 5 | High |
| Jul | 5 | Moderate |
| Aug | 6 | High |
| Sep | 8 | Very high |
| Oct | 10 | Very high |
| Nov | 12 | Extreme |
| Dec | 13 | Extreme |
Air quality in Guaratuba 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 Guaratuba is worst in August — around 15 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (February, 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) | 9 | 9 | 9 | 10 | 12 | 14 | 15 | 15 | 14 | 12 | 9 | 9 |
| Level | Good | Good | Good | Good | Good | Moderate | Moderate | Moderate | Moderate | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 9 | Good |
| Feb | 9 | Good |
| Mar | 9 | Good |
| Apr | 10 | Good |
| May | 12 | Good |
| Jun | 14 | Moderate |
| Jul | 15 | Moderate |
| Aug | 15 | Moderate |
| Sep | 14 | Moderate |
| Oct | 12 | Good |
| Nov | 9 | Good |
| Dec | 9 | Good |
Where is Guaratuba?
Guaratuba sits at 25.9°S, 48.6°W, 6 m above sea level, in Brazil. The nearest listed city is Matinhos, 7.0 km away.
Topography around Guaratuba
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Guaratuba.
Within 3 km, the terrain around Guaratuba has only modest variations in elevation — a maximum elevation change of 138 m around an average of 6 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 824 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,785 m.
The land around Guaratuba is covered by water (49%) and artificial surfaces (25%) within 3 km, water (50%) and trees (38%) within 16 km, and trees (54%) and water (34%) 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 Guaratuba (-25.8828°, -48.5747°, elevation 6 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).