Araruama weather in September
In September, Araruama sees average daytime highs of 25°C and overnight lows near 20°C, with 74 mm of rain across 10 wet days and about 11.9 hours of daylight. It is the 9th-warmest and 8th-wettest month of the year here.
Day-to-day highs hold fairly steady near 25°C through the month. The sky is clear or mostly clear about 41% of the time in September, and the air most often feels muggy.
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 Araruama's 6th-clearest and 1st-windiest month. For the whole year in context, see Araruama's year-round climate.
- Daytime high
- 25°
- 9th warmest
- Overnight low
- 20°
- 4th coldest
- Rainfall
- 74 mm
- 10 wet days
- Daylight
- 11 h 54 min
- 6:48 AM – 6:40 PM
- Cloud cover
- 52%
- 6th clearest
- Wind
- 15 km/h
- 1st windiest
- Solar energy
- 4.95 kWh/m²
- Travel score
- 7.0
- out of 10
Temperature in September
Day-to-day highs hold fairly steady near 25°C through the month.
A typical September day in Araruama reaches about 25°C in the afternoon and slips back to 20°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 21°C and 28°C. Set against its neighbours, September runs on par with 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) | 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 | 25 | 25 | 25 | 25 |
| Avg low (°C) | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 25 | 19 |
| 2 | 25 | 19 |
| 3 | 25 | 19 |
| 4 | 25 | 19 |
| 5 | 25 | 19 |
| 6 | 25 | 19 |
| 7 | 25 | 19 |
| 8 | 25 | 19 |
| 9 | 25 | 19 |
| 10 | 25 | 20 |
| 11 | 25 | 20 |
| 12 | 25 | 20 |
| 13 | 25 | 20 |
| 14 | 25 | 20 |
| 15 | 25 | 20 |
| 16 | 25 | 20 |
| 17 | 25 | 20 |
| 18 | 25 | 20 |
| 19 | 25 | 20 |
| 20 | 25 | 20 |
| 21 | 25 | 20 |
| 22 | 25 | 20 |
| 23 | 25 | 20 |
| 24 | 25 | 20 |
| 25 | 25 | 20 |
| 26 | 25 | 20 |
| 27 | 25 | 20 |
| 28 | 25 | 20 |
| 29 | 25 | 20 |
| 30 | 25 | 20 |
How September really feels in Araruama
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.
Araruama weather by month
How September compares with the rest of the year at a glance. September is the 9th-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 | 29° / 24° | 178 | 15.4 | 13.2 | 5.0 |
| Feb | 29° / 24° | 122 | 11.7 | 12.8 | 5.2 |
| Mar | 28° / 23° | 163 | 16.1 | 12.2 | 5.2 |
| Apr | 27° / 22° | 85 | 11.5 | 11.5 | 6.4 |
| May | 25° / 20° | 74 | 10.9 | 10.9 | 6.9 |
| Jun | 25° / 19° | 43 | 6.9 | 10.6 | 7.7 |
| Jul | 24° / 18° | 45 | 7.8 | 10.7 | 7.7 |
| Aug | 24° / 19° | 42 | 7.2 | 11.2 | 7.7 |
| Sep | 25° / 20° | 74 | 10 | 11.9 | 7.0 |
| Oct | 26° / 21° | 94 | 11.1 | 12.5 | 6.5 |
| Nov | 26° / 22° | 172 | 15.9 | 13.1 | 5.6 |
| Dec | 28° / 23° | 189 | 16.9 | 13.4 | 5.2 |
Cloud cover in September
The sky is clear or mostly clear about 41% 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 48%. 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 (%) | 66 | 66 | 66 | 66 | 64 | 64 | 62 | 61 | 60 | 58 | 57 | 55 | 55 | 53 | 52 | 50 | 49 | 48 | 47 | 46 | 44 | 44 | 45 | 44 | 43 | 43 | 42 | 42 | 42 | 41 |
| Cloudier (%) | 34 | 34 | 34 | 34 | 36 | 36 | 38 | 39 | 40 | 42 | 43 | 45 | 45 | 47 | 48 | 50 | 51 | 52 | 53 | 54 | 56 | 56 | 55 | 56 | 57 | 57 | 58 | 58 | 58 | 59 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 66 | 34 |
| 2 | 66 | 34 |
| 3 | 66 | 34 |
| 4 | 66 | 34 |
| 5 | 64 | 36 |
| 6 | 64 | 36 |
| 7 | 62 | 38 |
| 8 | 61 | 39 |
| 9 | 60 | 40 |
| 10 | 58 | 42 |
| 11 | 57 | 43 |
| 12 | 55 | 45 |
| 13 | 55 | 45 |
| 14 | 53 | 47 |
| 15 | 52 | 48 |
| 16 | 50 | 50 |
| 17 | 49 | 51 |
| 18 | 48 | 52 |
| 19 | 47 | 53 |
| 20 | 46 | 54 |
| 21 | 44 | 56 |
| 22 | 44 | 56 |
| 23 | 45 | 55 |
| 24 | 44 | 56 |
| 25 | 43 | 57 |
| 26 | 43 | 57 |
| 27 | 42 | 58 |
| 28 | 42 | 58 |
| 29 | 42 | 58 |
| 30 | 41 | 59 |
Chance of precipitation in September
Araruama gets around 74 mm of rain over 10 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 32% and peaks near 40% 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 (%) | 24 | 25 | 25 | 25 | 26 | 26 | 27 | 27 | 28 | 28 | 29 | 30 | 30 | 31 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 38 | 39 | 39 | 39 | 39 | 40 | 40 | 39 |
| Rain chance (%) | |
|---|---|
| 1 | 24 |
| 2 | 25 |
| 3 | 25 |
| 4 | 25 |
| 5 | 26 |
| 6 | 26 |
| 7 | 27 |
| 8 | 27 |
| 9 | 28 |
| 10 | 28 |
| 11 | 29 |
| 12 | 30 |
| 13 | 30 |
| 14 | 31 |
| 15 | 31 |
| 16 | 32 |
| 17 | 33 |
| 18 | 34 |
| 19 | 35 |
| 20 | 36 |
| 21 | 37 |
| 22 | 38 |
| 23 | 38 |
| 24 | 39 |
| 25 | 39 |
| 26 | 39 |
| 27 | 39 |
| 28 | 40 |
| 29 | 40 |
| 30 | 39 |
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 48% of days. Sticky, muggy-or-worse air turns up on roughly 53% 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 (%) | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 3 | 3 | 3 | 3 |
| Comfortable (%) | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 10 | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 9 |
| Humid (%) | 39 | 38 | 38 | 38 | 38 | 38 | 38 | 38 | 38 | 38 | 37 | 37 | 37 | 36 | 35 | 35 | 34 | 33 | 33 | 32 | 32 | 31 | 31 | 30 | 30 | 29 | 29 | 29 | 29 | 28 |
| Muggy (%) | 45 | 45 | 46 | 46 | 46 | 46 | 46 | 47 | 47 | 47 | 48 | 48 | 49 | 49 | 50 | 50 | 50 | 51 | 50 | 50 | 50 | 49 | 49 | 48 | 48 | 47 | 47 | 46 | 46 | 46 |
| Oppressive (%) | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 3 | 3 | 3 | 4 | 4 | 5 | 6 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 13 | 14 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | |
|---|---|---|---|---|---|
| 1 | 2 | 13 | 39 | 45 | 1 |
| 2 | 2 | 13 | 38 | 45 | 1 |
| 3 | 2 | 13 | 38 | 46 | 1 |
| 4 | 2 | 13 | 38 | 46 | 1 |
| 5 | 2 | 13 | 38 | 46 | 1 |
| 6 | 2 | 13 | 38 | 46 | 1 |
| 7 | 2 | 13 | 38 | 46 | 1 |
| 8 | 2 | 12 | 38 | 47 | 1 |
| 9 | 2 | 12 | 38 | 47 | 1 |
| 10 | 1 | 12 | 38 | 47 | 2 |
| 11 | 1 | 12 | 37 | 48 | 2 |
| 12 | 1 | 12 | 37 | 48 | 2 |
| 13 | 1 | 11 | 37 | 49 | 2 |
| 14 | 1 | 11 | 36 | 49 | 3 |
| 15 | 1 | 11 | 35 | 50 | 3 |
| 16 | 1 | 11 | 35 | 50 | 3 |
| 17 | 1 | 11 | 34 | 50 | 4 |
| 18 | 1 | 11 | 33 | 51 | 4 |
| 19 | 1 | 11 | 33 | 50 | 5 |
| 20 | 2 | 11 | 32 | 50 | 6 |
| 21 | 2 | 11 | 32 | 50 | 6 |
| 22 | 2 | 10 | 31 | 49 | 7 |
| 23 | 2 | 10 | 31 | 49 | 8 |
| 24 | 2 | 10 | 30 | 48 | 9 |
| 25 | 3 | 10 | 30 | 48 | 10 |
| 26 | 3 | 10 | 29 | 47 | 11 |
| 27 | 3 | 9 | 29 | 47 | 12 |
| 28 | 3 | 9 | 29 | 46 | 13 |
| 29 | 3 | 9 | 29 | 46 | 13 |
| 30 | 3 | 9 | 28 | 46 | 14 |
Wind in September
Winds average 15 km/h in September, the windiest month of the year.
Across September, daily wind ranges from about 15 km/h on the calmest days to 16 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) | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 |
| 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 |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 15 | light breeze |
| 2 | 15 | light breeze |
| 3 | 15 | light breeze |
| 4 | 15 | light breeze |
| 5 | 15 | light breeze |
| 6 | 15 | light breeze |
| 7 | 15 | light breeze |
| 8 | 15 | light breeze |
| 9 | 16 | light breeze |
| 10 | 16 | light breeze |
| 11 | 16 | light breeze |
| 12 | 16 | light breeze |
| 13 | 16 | light breeze |
| 14 | 16 | light breeze |
| 15 | 16 | light breeze |
| 16 | 16 | light breeze |
| 17 | 16 | light breeze |
| 18 | 16 | light breeze |
| 19 | 16 | light breeze |
| 20 | 15 | light breeze |
| 21 | 15 | light breeze |
| 22 | 15 | light breeze |
| 23 | 15 | light breeze |
| 24 | 15 | light breeze |
| 25 | 15 | light breeze |
| 26 | 15 | light breeze |
| 27 | 15 | light breeze |
| 28 | 15 | light breeze |
| 29 | 15 | light breeze |
| 30 | 15 | light breeze |
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 7:03 AM to 6:33 AM, and sunset from 6:35 PM to 6:44 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 | 11.6 | 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 | 12.0 | 12.0 | 12.0 | 12.0 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.2 | 12.2 |
| Sunrise (AM) | 7:03 | 7:02 | 7:01 | 7:00 | 6:59 | 6:58 | 6:57 | 6:56 | 6:55 | 6:54 | 6:53 | 6:52 | 6:51 | 6:50 | 6:49 | 6:48 | 6:47 | 6:46 | 6:44 | 6:43 | 6:42 | 6:41 | 6:40 | 6:39 | 6:38 | 6:37 | 6:36 | 6:35 | 6:34 | 6:33 |
| Sunset (PM) | 6:35 | 6:35 | 6:36 | 6:36 | 6:36 | 6:37 | 6:37 | 6:37 | 6:38 | 6:38 | 6:38 | 6:39 | 6:39 | 6:39 | 6:39 | 6:40 | 6:40 | 6:40 | 6:41 | 6:41 | 6:41 | 6:42 | 6:42 | 6:42 | 6:43 | 6:43 | 6:43 | 6:44 | 6:44 | 6:44 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 11.5 | 7:03 | 6:35 |
| 2 | 11.6 | 7:02 | 6:35 |
| 3 | 11.6 | 7:01 | 6:36 |
| 4 | 11.6 | 7:00 | 6:36 |
| 5 | 11.6 | 6:59 | 6:36 |
| 6 | 11.6 | 6:58 | 6:37 |
| 7 | 11.7 | 6:57 | 6:37 |
| 8 | 11.7 | 6:56 | 6:37 |
| 9 | 11.7 | 6:55 | 6:38 |
| 10 | 11.7 | 6:54 | 6:38 |
| 11 | 11.8 | 6:53 | 6:38 |
| 12 | 11.8 | 6:52 | 6:39 |
| 13 | 11.8 | 6:51 | 6:39 |
| 14 | 11.8 | 6:50 | 6:39 |
| 15 | 11.8 | 6:49 | 6:39 |
| 16 | 11.9 | 6:48 | 6:40 |
| 17 | 11.9 | 6:47 | 6:40 |
| 18 | 11.9 | 6:46 | 6:40 |
| 19 | 11.9 | 6:44 | 6:41 |
| 20 | 12.0 | 6:43 | 6:41 |
| 21 | 12.0 | 6:42 | 6:41 |
| 22 | 12.0 | 6:41 | 6:42 |
| 23 | 12.0 | 6:40 | 6:42 |
| 24 | 12.1 | 6:39 | 6:42 |
| 25 | 12.1 | 6:38 | 6:43 |
| 26 | 12.1 | 6:37 | 6:43 |
| 27 | 12.1 | 6:36 | 6:43 |
| 28 | 12.1 | 6:35 | 6:44 |
| 29 | 12.2 | 6:34 | 6:44 |
| 30 | 12.2 | 6:33 | 6:44 |
Solar energy in September
Average shortwave solar energy reaching the ground each day in September, about 4.95 kWh/m².
For context, solar energy here swings from a low near 3.53 kWh/m² to a high of 6.32 kWh/m² in February across the year — September's 4.95 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) | 4.8 | 4.8 | 4.9 | 4.9 | 4.9 | 4.9 | 4.9 | 4.9 | 4.9 | 4.9 | 5.0 | 5.0 | 5.0 | 5.0 | 5.0 | 5.0 | 5.0 | 5.0 | 5.0 | 5.0 | 5.0 | 5.0 | 5.0 | 5.0 | 5.0 | 5.0 | 5.1 | 5.1 | 5.1 | 5.1 |
| 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 |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 4.8 | Bright |
| 2 | 4.8 | Bright |
| 3 | 4.9 | Bright |
| 4 | 4.9 | Bright |
| 5 | 4.9 | Bright |
| 6 | 4.9 | Bright |
| 7 | 4.9 | Bright |
| 8 | 4.9 | Bright |
| 9 | 4.9 | Bright |
| 10 | 4.9 | Bright |
| 11 | 5.0 | Bright |
| 12 | 5.0 | Bright |
| 13 | 5.0 | Bright |
| 14 | 5.0 | Bright |
| 15 | 5.0 | Bright |
| 16 | 5.0 | Bright |
| 17 | 5.0 | Bright |
| 18 | 5.0 | Bright |
| 19 | 5.0 | Bright |
| 20 | 5.0 | Bright |
| 21 | 5.0 | Bright |
| 22 | 5.0 | Bright |
| 23 | 5.0 | Bright |
| 24 | 5.0 | Bright |
| 25 | 5.0 | Bright |
| 26 | 5.0 | Bright |
| 27 | 5.1 | Bright |
| 28 | 5.1 | Bright |
| 29 | 5.1 | Bright |
| 30 | 5.1 | Bright |
Hazard calendar for Araruama
None of Araruama's seasonal hazards are active in September. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.
Araruama's rainy season runs October–March, when most of the year's rain falls.
Is September a good time to visit Araruama?
Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
September is one of the better times to visit Araruama for general sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Araruama in September
From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In September, Araruama sees daytime highs around 25°C and nights near 20°C. Worth packing: light clothes, rain gear and sun protection. About 10 days see rain.
Sea temperature near Araruama in September
The nearest coast averages about 22°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 28 km away) is warmest in March at about 26°C and coldest in September near 22°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) | 25 | 25 | 26 | 25 | 24 | 23 | 22 | 22 | 22 | 22 | 23 | 24 |
| Comfort | Warm | Warm | Warm | Warm | Refreshing | Refreshing | Refreshing | Refreshing | Refreshing | Refreshing | Refreshing | Warm |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 25 | Warm |
| Feb | 25 | Warm |
| Mar | 26 | Warm |
| Apr | 25 | Warm |
| May | 24 | Refreshing |
| Jun | 23 | Refreshing |
| Jul | 22 | Refreshing |
| Aug | 22 | Refreshing |
| Sep | 22 | Refreshing |
| Oct | 22 | Refreshing |
| Nov | 23 | Refreshing |
| Dec | 24 | Warm |
UV index in Araruama in September
Clear-sky midday UV in September peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Araruama peaks around January 14 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 12 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) | 14 | 13 | 12 | 9 | 7 | 6 | 5 | 8 | 7 | 12 | 13 | 14 |
| Level | Extreme | Extreme | Extreme | Very high | High | High | Moderate | Very high | High | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 14 | Extreme |
| Feb | 13 | Extreme |
| Mar | 12 | Extreme |
| Apr | 9 | Very high |
| May | 7 | High |
| Jun | 6 | High |
| Jul | 5 | Moderate |
| Aug | 8 | Very high |
| Sep | 7 | High |
| Oct | 12 | Extreme |
| Nov | 13 | Extreme |
| Dec | 14 | Extreme |
Where is Araruama?
Araruama sits at 22.9°S, 42.3°W, 20 m above sea level, in Brazil. The nearest listed city is Iguaba Grande, 12 km away.
Topography around Araruama
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Araruama.
Within 3 km, the terrain around Araruama has only modest variations in elevation — a maximum elevation change of 67 m around an average of 10 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 584 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,252 m.
The land around Araruama is covered by artificial surfaces (50%) and water (22%) within 3 km, water (37%), grassland (32%) and trees (21%) within 16 km, and water (45%) and trees (31%) 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 Araruama (-22.8728°, -42.3431°, elevation 20 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).