São João de Meriti weather in October
In October, São João de Meriti sees average daytime highs of 28°C and overnight lows near 20°C, with 120 mm of rain across 14.4 wet days and about 12.5 hours of daylight. It is the 7th-warmest and 6th-wettest month of the year here.
Day-to-day highs hold fairly steady near 28°C through the month. The sky is clear or mostly clear about 20% of the time in October, and the air most often feels muggy.
Daylight stretches from about 12 h 12 min at the start of October to 12 h 48 min by month's end. Set against the rest of the year, October is São João de Meriti's 9th-clearest and 2nd-windiest month. For the whole year in context, see São João de Meriti's year-round climate.
- Daytime high
- 28°
- 7th warmest
- Overnight low
- 20°
- 6th coldest
- Rainfall
- 120 mm
- 14.4 wet days
- Daylight
- 12 h 30 min
- 6:22 AM – 6:55 PM
- Cloud cover
- 68%
- 9th clearest
- Wind
- 7 km/h
- 2nd windiest
- Solar energy
- 5.04 kWh/m²
- Travel score
- 5.3
- out of 10
São João de Meriti is human settlement in Brazil.
- Air quality
- Moderate
- PM2.5 12 µg/m³ · 2015
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in October
Day-to-day highs hold fairly steady near 28°C through the month.
A typical October day in São João de Meriti reaches about 28°C in the afternoon and slips back to 20°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 22°C and 33°C. Set against its neighbours, October runs about 1°C warmer than September and on par with November.
| 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 27 | 27 | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 |
| Avg low (°C) | 19 | 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 | 27 | 19 |
| 2 | 27 | 19 |
| 3 | 27 | 19 |
| 4 | 27 | 19 |
| 5 | 27 | 19 |
| 6 | 28 | 19 |
| 7 | 28 | 19 |
| 8 | 28 | 19 |
| 9 | 28 | 19 |
| 10 | 28 | 19 |
| 11 | 28 | 20 |
| 12 | 28 | 20 |
| 13 | 28 | 20 |
| 14 | 28 | 20 |
| 15 | 28 | 20 |
| 16 | 28 | 20 |
| 17 | 28 | 20 |
| 18 | 28 | 20 |
| 19 | 28 | 20 |
| 20 | 28 | 20 |
| 21 | 28 | 20 |
| 22 | 28 | 20 |
| 23 | 28 | 20 |
| 24 | 28 | 20 |
| 25 | 28 | 20 |
| 26 | 28 | 20 |
| 27 | 28 | 20 |
| 28 | 28 | 20 |
| 29 | 28 | 20 |
| 30 | 28 | 20 |
| 31 | 28 | 20 |
How October really feels in São João de Meriti
Once humidity and wind are folded in, October 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.
October sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
São João de Meriti weather by month
How October compares with the rest of the year at a glance. October is the 7th-warmest and 6th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 31° / 23° | 266 | 21.3 | 13.2 | 3.2 |
| Feb | 32° / 23° | 197 | 17.8 | 12.8 | 3.3 |
| Mar | 30° / 22° | 216 | 21.1 | 12.2 | 3.7 |
| Apr | 29° / 21° | 106 | 13.5 | 11.5 | 5.2 |
| May | 26° / 18° | 74 | 11.1 | 10.9 | 6.6 |
| Jun | 26° / 17° | 47 | 7.1 | 10.6 | 7.3 |
| Jul | 26° / 16° | 47 | 7.2 | 10.7 | 7.4 |
| Aug | 26° / 17° | 44 | 7.5 | 11.2 | 7.2 |
| Sep | 27° / 18° | 87 | 11.1 | 11.9 | 6.3 |
| Oct | 28° / 20° | 120 | 14.4 | 12.5 | 5.3 |
| Nov | 28° / 21° | 213 | 19 | 13.1 | 4.4 |
| Dec | 30° / 22° | 237 | 21.2 | 13.4 | 3.6 |
Cloud cover in October
The sky is clear or mostly clear about 20% of the time in October.
Beyond those clear spells, partly cloudy skies cover about 13% of October, with mostly cloudy or overcast conditions the remaining 67%.
| 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 34 | 34 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 36 | 36 | 34 | 34 | 34 | 33 | 33 | 32 | 34 | 33 | 33 | 32 | 33 | 32 | 32 | 31 | 31 | 31 | 30 | 31 | 31 | 30 |
| Cloudier (%) | 66 | 66 | 65 | 65 | 65 | 65 | 65 | 65 | 65 | 64 | 64 | 66 | 66 | 66 | 67 | 67 | 68 | 66 | 67 | 67 | 68 | 67 | 68 | 68 | 69 | 69 | 69 | 70 | 69 | 69 | 70 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 34 | 66 |
| 2 | 34 | 66 |
| 3 | 35 | 65 |
| 4 | 35 | 65 |
| 5 | 35 | 65 |
| 6 | 35 | 65 |
| 7 | 35 | 65 |
| 8 | 35 | 65 |
| 9 | 35 | 65 |
| 10 | 36 | 64 |
| 11 | 36 | 64 |
| 12 | 34 | 66 |
| 13 | 34 | 66 |
| 14 | 34 | 66 |
| 15 | 33 | 67 |
| 16 | 33 | 67 |
| 17 | 32 | 68 |
| 18 | 34 | 66 |
| 19 | 33 | 67 |
| 20 | 33 | 67 |
| 21 | 32 | 68 |
| 22 | 33 | 67 |
| 23 | 32 | 68 |
| 24 | 32 | 68 |
| 25 | 31 | 69 |
| 26 | 31 | 69 |
| 27 | 31 | 69 |
| 28 | 30 | 70 |
| 29 | 31 | 69 |
| 30 | 31 | 69 |
| 31 | 30 | 70 |
Chance of precipitation in October
São João de Meriti gets around 120 mm of rain over 14.4 wet days in October. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 47% and peaks near 55% 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 45 | 45 | 45 | 44 | 44 | 43 | 42 | 42 | 42 | 42 | 42 | 42 | 42 | 43 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 | 51 | 51 | 52 | 52 | 53 | 54 | 54 | 55 | 55 |
| Rain chance (%) | |
|---|---|
| 1 | 45 |
| 2 | 45 |
| 3 | 45 |
| 4 | 44 |
| 5 | 44 |
| 6 | 43 |
| 7 | 42 |
| 8 | 42 |
| 9 | 42 |
| 10 | 42 |
| 11 | 42 |
| 12 | 42 |
| 13 | 42 |
| 14 | 43 |
| 15 | 43 |
| 16 | 44 |
| 17 | 45 |
| 18 | 46 |
| 19 | 47 |
| 20 | 48 |
| 21 | 49 |
| 22 | 50 |
| 23 | 51 |
| 24 | 51 |
| 25 | 52 |
| 26 | 52 |
| 27 | 53 |
| 28 | 54 |
| 29 | 54 |
| 30 | 55 |
| 31 | 55 |
Humidity in October
Most of October feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, October lands in the muggy band about 50% of days. Sticky, muggy-or-worse air turns up on roughly 66% 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 3 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Comfortable (%) | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 8 | 8 | 8 | 7 | 7 | 6 | 6 | 5 | 5 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| Humid (%) | 37 | 36 | 36 | 35 | 34 | 33 | 32 | 31 | 30 | 29 | 28 | 28 | 27 | 27 | 26 | 25 | 25 | 24 | 24 | 23 | 23 | 22 | 22 | 22 | 22 | 22 | 22 | 21 | 21 | 21 | 20 |
| Muggy (%) | 43 | 43 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 | 51 | 50 | 52 | 51 | 53 | 54 | 54 | 54 | 54 | 55 | 54 | 54 | 54 | 53 | 53 | 52 | 52 | 52 | 52 | 51 | 51 |
| Oppressive (%) | 9 | 9 | 10 | 10 | 11 | 11 | 11 | 11 | 12 | 12 | 12 | 13 | 13 | 14 | 15 | 15 | 16 | 17 | 18 | 18 | 19 | 20 | 20 | 21 | 21 | 22 | 22 | 23 | 23 | 24 | 25 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | |
|---|---|---|---|---|---|
| 1 | 3 | 9 | 37 | 43 | 9 |
| 2 | 2 | 9 | 36 | 43 | 9 |
| 3 | 2 | 9 | 36 | 43 | 10 |
| 4 | 2 | 9 | 35 | 44 | 10 |
| 5 | 2 | 9 | 34 | 45 | 11 |
| 6 | 1 | 9 | 33 | 46 | 11 |
| 7 | 1 | 9 | 32 | 47 | 11 |
| 8 | 1 | 9 | 31 | 48 | 11 |
| 9 | 1 | 9 | 30 | 49 | 12 |
| 10 | 1 | 8 | 29 | 50 | 12 |
| 11 | 1 | 8 | 28 | 51 | 12 |
| 12 | 1 | 8 | 28 | 50 | 13 |
| 13 | 1 | 7 | 27 | 52 | 13 |
| 14 | 1 | 7 | 27 | 51 | 14 |
| 15 | 0 | 6 | 26 | 53 | 15 |
| 16 | 0 | 6 | 25 | 54 | 15 |
| 17 | 0 | 5 | 25 | 54 | 16 |
| 18 | 0 | 5 | 24 | 54 | 17 |
| 19 | 0 | 4 | 24 | 54 | 18 |
| 20 | 0 | 4 | 23 | 55 | 18 |
| 21 | 0 | 4 | 23 | 54 | 19 |
| 22 | 0 | 4 | 22 | 54 | 20 |
| 23 | 0 | 4 | 22 | 54 | 20 |
| 24 | 0 | 4 | 22 | 53 | 21 |
| 25 | 0 | 4 | 22 | 53 | 21 |
| 26 | 0 | 4 | 22 | 52 | 22 |
| 27 | 0 | 4 | 22 | 52 | 22 |
| 28 | 0 | 4 | 21 | 52 | 23 |
| 29 | 0 | 4 | 21 | 52 | 23 |
| 30 | 0 | 4 | 21 | 51 | 24 |
| 31 | 0 | 4 | 20 | 51 | 25 |
Wind in October
Winds average 7 km/h in October.
Across October, daily wind ranges from about 6 km/h on the calmest days to 7 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 6 | 6 | 6 | 6 | 6 | 6 |
| 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 | calm |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 7 | calm |
| 2 | 7 | calm |
| 3 | 7 | calm |
| 4 | 7 | calm |
| 5 | 7 | calm |
| 6 | 7 | calm |
| 7 | 7 | calm |
| 8 | 7 | calm |
| 9 | 7 | calm |
| 10 | 7 | calm |
| 11 | 7 | calm |
| 12 | 7 | calm |
| 13 | 7 | calm |
| 14 | 7 | calm |
| 15 | 7 | calm |
| 16 | 7 | calm |
| 17 | 7 | calm |
| 18 | 7 | calm |
| 19 | 7 | calm |
| 20 | 7 | calm |
| 21 | 7 | calm |
| 22 | 7 | calm |
| 23 | 7 | calm |
| 24 | 7 | calm |
| 25 | 7 | calm |
| 26 | 6 | calm |
| 27 | 6 | calm |
| 28 | 6 | calm |
| 29 | 6 | calm |
| 30 | 6 | calm |
| 31 | 6 | calm |
Sunrise & sunset in October
Daylight runs from about 12 h 12 min at the start of October to 12 h 48 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 36 minutes over October. Sunrise moves from 6:36 AM to 6:12 AM, and sunset from 6:49 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 12.2 | 12.2 | 12.3 | 12.3 | 12.3 | 12.3 | 12.3 | 12.4 | 12.4 | 12.4 | 12.4 | 12.5 | 12.5 | 12.5 | 12.5 | 12.5 | 12.6 | 12.6 | 12.6 | 12.6 | 12.6 | 12.7 | 12.7 | 12.7 | 12.7 | 12.7 | 12.8 | 12.8 | 12.8 | 12.8 | 12.8 |
| Sunrise (AM) | 6:36 | 6:35 | 6:34 | 6:33 | 6:32 | 6:31 | 6:30 | 6:29 | 6:29 | 6:28 | 6:27 | 6:26 | 6:25 | 6:24 | 6:23 | 6:22 | 6:22 | 6:21 | 6:20 | 6:19 | 6:18 | 6:18 | 6:17 | 6:16 | 6:16 | 6:15 | 6:14 | 6:14 | 6:13 | 6:12 | 6:12 |
| Sunset (PM) | 6:49 | 6:49 | 6:49 | 6:50 | 6:50 | 6:51 | 6:51 | 6:51 | 6:52 | 6:52 | 6:53 | 6:53 | 6:53 | 6:54 | 6:54 | 6:55 | 6:55 | 6:56 | 6:56 | 6:57 | 6:57 | 6:58 | 6:58 | 6:59 | 6:59 | 7:00 | 7:00 | 7:01 | 7:01 | 7:02 | 7:02 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 12.2 | 6:36 | 6:49 |
| 2 | 12.2 | 6:35 | 6:49 |
| 3 | 12.3 | 6:34 | 6:49 |
| 4 | 12.3 | 6:33 | 6:50 |
| 5 | 12.3 | 6:32 | 6:50 |
| 6 | 12.3 | 6:31 | 6:51 |
| 7 | 12.3 | 6:30 | 6:51 |
| 8 | 12.4 | 6:29 | 6:51 |
| 9 | 12.4 | 6:29 | 6:52 |
| 10 | 12.4 | 6:28 | 6:52 |
| 11 | 12.4 | 6:27 | 6:53 |
| 12 | 12.5 | 6:26 | 6:53 |
| 13 | 12.5 | 6:25 | 6:53 |
| 14 | 12.5 | 6:24 | 6:54 |
| 15 | 12.5 | 6:23 | 6:54 |
| 16 | 12.5 | 6:22 | 6:55 |
| 17 | 12.6 | 6:22 | 6:55 |
| 18 | 12.6 | 6:21 | 6:56 |
| 19 | 12.6 | 6:20 | 6:56 |
| 20 | 12.6 | 6:19 | 6:57 |
| 21 | 12.6 | 6:18 | 6:57 |
| 22 | 12.7 | 6:18 | 6:58 |
| 23 | 12.7 | 6:17 | 6:58 |
| 24 | 12.7 | 6:16 | 6:59 |
| 25 | 12.7 | 6:16 | 6:59 |
| 26 | 12.7 | 6:15 | 7:00 |
| 27 | 12.8 | 6:14 | 7:00 |
| 28 | 12.8 | 6:14 | 7:01 |
| 29 | 12.8 | 6:13 | 7:01 |
| 30 | 12.8 | 6:12 | 7:02 |
| 31 | 12.8 | 6:12 | 7:02 |
Solar energy in October
Average shortwave solar energy reaching the ground each day in October, about 5.04 kWh/m².
For context, solar energy here swings from a low near 3.33 kWh/m² to a high of 5.93 kWh/m² in February across the year — October's 5.04 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 4.6 | 4.7 | 4.7 | 4.7 | 4.8 | 4.8 | 4.8 | 4.9 | 4.9 | 5.0 | 5.0 | 5.0 | 5.0 | 5.1 | 5.1 | 5.1 | 5.1 | 5.1 | 5.1 | 5.1 | 5.1 | 5.1 | 5.1 | 5.1 | 5.1 | 5.1 | 5.0 | 5.0 | 5.0 | 5.0 | 5.0 |
| 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 | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 4.6 | Bright |
| 2 | 4.7 | Bright |
| 3 | 4.7 | Bright |
| 4 | 4.7 | Bright |
| 5 | 4.8 | Bright |
| 6 | 4.8 | Bright |
| 7 | 4.8 | Bright |
| 8 | 4.9 | Bright |
| 9 | 4.9 | Bright |
| 10 | 5.0 | Bright |
| 11 | 5.0 | Bright |
| 12 | 5.0 | Bright |
| 13 | 5.0 | Bright |
| 14 | 5.1 | Bright |
| 15 | 5.1 | Bright |
| 16 | 5.1 | Bright |
| 17 | 5.1 | Bright |
| 18 | 5.1 | Bright |
| 19 | 5.1 | Bright |
| 20 | 5.1 | Bright |
| 21 | 5.1 | Bright |
| 22 | 5.1 | Bright |
| 23 | 5.1 | Bright |
| 24 | 5.1 | Bright |
| 25 | 5.1 | Bright |
| 26 | 5.1 | Bright |
| 27 | 5.0 | Bright |
| 28 | 5.0 | Bright |
| 29 | 5.0 | Bright |
| 30 | 5.0 | Bright |
| 31 | 5.0 | Bright |
Hazard calendar for São João de Meriti
In October, São João de Meriti sits inside its rainy season season. The full year is below, with each hazard's peak months called out.
São João de Meriti's rainy season runs October–March, when most of the year's rain falls.
Is October a good time to visit São João de Meriti?
Our two travel scores rate October for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
October is a reasonable time to visit São João de Meriti for sightseeing.
What to pack for São João de Meriti in October
From October's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In October, São João de Meriti sees daytime highs around 28°C and nights near 20°C. Pack light clothes and rain gear. Worth having: sun protection. About 14 days see rain.
Sea temperature near São João de Meriti in October
The nearest coast averages about 22°C in October — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 36 km away) is warmest in March at about 26°C and coldest in August near 21°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 | 21 | 21 | 22 | 22 | 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 | 21 | Refreshing |
| Sep | 21 | Refreshing |
| Oct | 22 | Refreshing |
| Nov | 22 | Refreshing |
| Dec | 24 | Warm |
UV index in São João de Meriti in October
Clear-sky midday UV in October peaks around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in São João de Meriti peaks around January 13 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 13 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 | 12 | 9 | 6 | 6 | 5 | 8 | 6 | 11 | 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 | 6 | High |
| Jun | 6 | High |
| Jul | 5 | Moderate |
| Aug | 8 | Very high |
| Sep | 6 | High |
| Oct | 11 | Extreme |
| Nov | 13 | Extreme |
| Dec | 14 | Extreme |
Air quality in São João de Meriti in October
Average fine-particle pollution (PM2.5) through the year — so you can see where October falls, not just the annual average.
Air quality in São João de Meriti is worst in July — around 17 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (December, 8 µg/m³).
Seasonal pattern from CAMS reanalysis, scaled to São João de Meriti's WHO annual average of 12 µg/m³.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 8 | 8 | 9 | 11 | 14 | 16 | 17 | 14 | 17 | 11 | 9 | 8 |
| Level | Good | Good | Good | Good | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 8 | Good |
| Feb | 8 | Good |
| Mar | 9 | Good |
| Apr | 11 | Good |
| May | 14 | Moderate |
| Jun | 16 | Moderate |
| Jul | 17 | Moderate |
| Aug | 14 | Moderate |
| Sep | 17 | Moderate |
| Oct | 11 | Good |
| Nov | 9 | Good |
| Dec | 8 | Good |
Where is São João de Meriti?
São João de Meriti sits at 22.8°S, 43.4°W, 14 m above sea level, in Brazil. The nearest listed city is Nilópolis, 4.0 km away.
Topography around São João de Meriti
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of São João de Meriti.
Within 3 km, the terrain around São João de Meriti has only modest variations in elevation — a maximum elevation change of 154 m around an average of 27 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 956 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,224 m.
The land around São João de Meriti is covered by artificial surfaces (88%) within 3 km, artificial surfaces (52%) and trees (28%) within 16 km, and trees (37%), water (31%) and grassland (24%) 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 São João de Meriti (-22.8039°, -43.3722°, elevation 14 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).