Guarulhos weather in December
In December, Guarulhos sees average daytime highs of 27°C and overnight lows near 18°C, with 181 mm of rain across 20.9 wet days and about 13.4 hours of daylight. It is the 4th-warmest and 2nd-wettest month of the year here.
Day-to-day highs hold fairly steady near 27°C through the month. The sky is clear or mostly clear about 12% of the time in December, and the air most often feels muggy.
Daylight stretches from about 13 h 18 min at the start of December to 13 h 24 min by month's end. Set against the rest of the year, December is Guarulhos's 11th-clearest and 4th-windiest month. For the whole year in context, see Guarulhos's year-round climate.
- Daytime high
- 27°
- 4th warmest
- Overnight low
- 18°
- 9th coldest
- Rainfall
- 181 mm
- 20.9 wet days
- Daylight
- 13 h 24 min
- 6:19 AM – 7:45 PM
- Cloud cover
- 74%
- 11th clearest
- Wind
- 10 km/h
- 4th windiest
- Solar energy
- 5.64 kWh/m²
- Travel score
- 4.8
- out of 10
Guarulhos is settlement in Brazil.
- Air quality
- Elevated
- PM2.5 15.2 µg/m³ · 2019
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in December
Day-to-day highs hold fairly steady near 27°C through the month.
A typical December day in Guarulhos reaches about 27°C in the afternoon and slips back to 18°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 30°C. Set against its neighbours, December runs about 1°C warmer than November and on par with January.
| 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) | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 |
| Avg low (°C) | 18 | 18 | 18 | 18 | 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 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 26 | 18 |
| 2 | 26 | 18 |
| 3 | 26 | 18 |
| 4 | 26 | 18 |
| 5 | 26 | 18 |
| 6 | 26 | 18 |
| 7 | 26 | 18 |
| 8 | 26 | 18 |
| 9 | 26 | 18 |
| 10 | 26 | 18 |
| 11 | 26 | 18 |
| 12 | 26 | 18 |
| 13 | 26 | 18 |
| 14 | 27 | 18 |
| 15 | 27 | 18 |
| 16 | 27 | 19 |
| 17 | 27 | 19 |
| 18 | 27 | 19 |
| 19 | 27 | 19 |
| 20 | 27 | 19 |
| 21 | 27 | 19 |
| 22 | 27 | 19 |
| 23 | 27 | 19 |
| 24 | 27 | 19 |
| 25 | 27 | 19 |
| 26 | 27 | 19 |
| 27 | 27 | 19 |
| 28 | 27 | 19 |
| 29 | 27 | 19 |
| 30 | 27 | 19 |
| 31 | 27 | 19 |
Guarulhos weather by month
How December compares with the rest of the year at a glance. December is the 4th-warmest and 2nd-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 27° / 19° | 232 | 23.8 | 13.3 | 4.3 |
| Feb | 28° / 19° | 179 | 20.2 | 12.8 | 4.5 |
| Mar | 27° / 19° | 154 | 20.1 | 12.2 | 5.0 |
| Apr | 25° / 17° | 64 | 10.7 | 11.5 | 6.6 |
| May | 23° / 14° | 64 | 7.8 | 10.9 | 7.1 |
| Jun | 22° / 13° | 47 | 5.6 | 10.6 | 7.5 |
| Jul | 22° / 12° | 54 | 5.6 | 10.7 | 7.5 |
| Aug | 23° / 13° | 40 | 5.2 | 11.2 | 7.8 |
| Sep | 24° / 15° | 90 | 9.8 | 11.9 | 6.9 |
| Oct | 25° / 16° | 116 | 14.7 | 12.6 | 5.9 |
| Nov | 25° / 17° | 152 | 16.8 | 13.1 | 5.4 |
| Dec | 27° / 18° | 181 | 20.9 | 13.4 | 4.8 |
Cloud cover in December
The sky is clear or mostly clear about 12% of the time in December.
Beyond those clear spells, partly cloudy skies cover about 14% of December, with mostly cloudy or overcast conditions the remaining 74%.
| 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 (%) | 28 | 27 | 26 | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 26 | 26 | 25 | 26 | 26 | 27 | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 27 | 26 | 25 | 25 | 23 | 23 |
| Cloudier (%) | 72 | 73 | 74 | 74 | 74 | 75 | 75 | 75 | 75 | 75 | 75 | 75 | 74 | 74 | 75 | 74 | 74 | 73 | 73 | 73 | 73 | 72 | 72 | 72 | 72 | 73 | 74 | 75 | 75 | 77 | 77 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 28 | 72 |
| 2 | 27 | 73 |
| 3 | 26 | 74 |
| 4 | 26 | 74 |
| 5 | 26 | 74 |
| 6 | 25 | 75 |
| 7 | 25 | 75 |
| 8 | 25 | 75 |
| 9 | 25 | 75 |
| 10 | 25 | 75 |
| 11 | 25 | 75 |
| 12 | 25 | 75 |
| 13 | 26 | 74 |
| 14 | 26 | 74 |
| 15 | 25 | 75 |
| 16 | 26 | 74 |
| 17 | 26 | 74 |
| 18 | 27 | 73 |
| 19 | 27 | 73 |
| 20 | 27 | 73 |
| 21 | 27 | 73 |
| 22 | 28 | 72 |
| 23 | 28 | 72 |
| 24 | 28 | 72 |
| 25 | 28 | 72 |
| 26 | 27 | 73 |
| 27 | 26 | 74 |
| 28 | 25 | 75 |
| 29 | 25 | 75 |
| 30 | 23 | 77 |
| 31 | 23 | 77 |
Chance of precipitation in December
Guarulhos gets around 181 mm of rain over 20.9 wet days in December. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 68% and peaks near 73% 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 (%) | 60 | 61 | 62 | 63 | 63 | 64 | 65 | 66 | 66 | 67 | 67 | 68 | 68 | 69 | 69 | 69 | 69 | 70 | 70 | 70 | 70 | 70 | 70 | 70 | 70 | 71 | 71 | 72 | 72 | 72 | 73 |
| Rain chance (%) | |
|---|---|
| 1 | 60 |
| 2 | 61 |
| 3 | 62 |
| 4 | 63 |
| 5 | 63 |
| 6 | 64 |
| 7 | 65 |
| 8 | 66 |
| 9 | 66 |
| 10 | 67 |
| 11 | 67 |
| 12 | 68 |
| 13 | 68 |
| 14 | 69 |
| 15 | 69 |
| 16 | 69 |
| 17 | 69 |
| 18 | 70 |
| 19 | 70 |
| 20 | 70 |
| 21 | 70 |
| 22 | 70 |
| 23 | 70 |
| 24 | 70 |
| 25 | 70 |
| 26 | 71 |
| 27 | 71 |
| 28 | 72 |
| 29 | 72 |
| 30 | 72 |
| 31 | 73 |
Humidity in December
Most of December feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, December lands in the muggy band about 59% of days. Sticky, muggy-or-worse air turns up on roughly 59% 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Comfortable (%) | 13 | 13 | 12 | 11 | 11 | 10 | 10 | 10 | 9 | 9 | 8 | 8 | 8 | 7 | 7 | 7 | 6 | 6 | 6 | 6 | 5 | 5 | 5 | 5 | 4 | 4 | 4 | 3 | 3 | 3 | 3 |
| Humid (%) | 44 | 43 | 42 | 41 | 40 | 39 | 38 | 37 | 36 | 36 | 35 | 35 | 34 | 34 | 34 | 33 | 33 | 32 | 32 | 31 | 31 | 30 | 29 | 28 | 28 | 27 | 26 | 26 | 26 | 25 | 25 |
| Muggy (%) | 43 | 44 | 46 | 47 | 49 | 51 | 52 | 53 | 55 | 55 | 57 | 57 | 58 | 59 | 59 | 60 | 61 | 62 | 62 | 63 | 63 | 64 | 65 | 66 | 67 | 68 | 69 | 69 | 69 | 70 | 70 |
| Oppressive (%) | 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 | 1 | 2 | 2 | 2 | 2 |
| Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | |
|---|---|---|---|---|
| 1 | 13 | 44 | 43 | 0 |
| 2 | 13 | 43 | 44 | 0 |
| 3 | 12 | 42 | 46 | 0 |
| 4 | 11 | 41 | 47 | 0 |
| 5 | 11 | 40 | 49 | 0 |
| 6 | 10 | 39 | 51 | 0 |
| 7 | 10 | 38 | 52 | 0 |
| 8 | 10 | 37 | 53 | 0 |
| 9 | 9 | 36 | 55 | 0 |
| 10 | 9 | 36 | 55 | 0 |
| 11 | 8 | 35 | 57 | 0 |
| 12 | 8 | 35 | 57 | 0 |
| 13 | 8 | 34 | 58 | 0 |
| 14 | 7 | 34 | 59 | 0 |
| 15 | 7 | 34 | 59 | 0 |
| 16 | 7 | 33 | 60 | 0 |
| 17 | 6 | 33 | 61 | 0 |
| 18 | 6 | 32 | 62 | 0 |
| 19 | 6 | 32 | 62 | 0 |
| 20 | 6 | 31 | 63 | 0 |
| 21 | 5 | 31 | 63 | 1 |
| 22 | 5 | 30 | 64 | 1 |
| 23 | 5 | 29 | 65 | 1 |
| 24 | 5 | 28 | 66 | 1 |
| 25 | 4 | 28 | 67 | 1 |
| 26 | 4 | 27 | 68 | 1 |
| 27 | 4 | 26 | 69 | 1 |
| 28 | 3 | 26 | 69 | 2 |
| 29 | 3 | 26 | 69 | 2 |
| 30 | 3 | 25 | 70 | 2 |
| 31 | 3 | 25 | 70 | 2 |
Wind in December
Winds average 10 km/h in December.
Across December, 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 |
| 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 | 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 | 10 | calm |
| 20 | 10 | calm |
| 21 | 10 | calm |
| 22 | 10 | calm |
| 23 | 10 | calm |
| 24 | 10 | calm |
| 25 | 10 | calm |
| 26 | 10 | calm |
| 27 | 10 | calm |
| 28 | 10 | calm |
| 29 | 10 | calm |
| 30 | 10 | calm |
| 31 | 10 | calm |
Sunrise & sunset in December
Daylight runs from about 13 h 18 min at the start of December to 13 h 24 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 6 minutes over December. Sunrise moves from 6:16 AM to 6:26 AM, and sunset from 7:36 PM to 7:52 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) | 13.3 | 13.4 | 13.4 | 13.4 | 13.4 | 13.4 | 13.4 | 13.4 | 13.4 | 13.4 | 13.4 | 13.4 | 13.4 | 13.4 | 13.4 | 13.4 | 13.4 | 13.4 | 13.4 | 13.4 | 13.4 | 13.4 | 13.4 | 13.4 | 13.4 | 13.4 | 13.4 | 13.4 | 13.4 | 13.4 | 13.4 |
| Sunrise (AM) | 6:16 | 6:16 | 6:16 | 6:16 | 6:16 | 6:16 | 6:17 | 6:17 | 6:17 | 6:17 | 6:18 | 6:18 | 6:18 | 6:18 | 6:19 | 6:19 | 6:20 | 6:20 | 6:20 | 6:21 | 6:21 | 6:22 | 6:22 | 6:23 | 6:23 | 6:24 | 6:24 | 6:25 | 6:25 | 6:26 | 6:26 |
| Sunset (PM) | 7:36 | 7:37 | 7:37 | 7:38 | 7:39 | 7:39 | 7:40 | 7:41 | 7:41 | 7:42 | 7:43 | 7:43 | 7:44 | 7:44 | 7:45 | 7:45 | 7:46 | 7:46 | 7:47 | 7:48 | 7:48 | 7:48 | 7:49 | 7:49 | 7:50 | 7:50 | 7:51 | 7:51 | 7:51 | 7:52 | 7:52 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 13.3 | 6:16 | 7:36 |
| 2 | 13.4 | 6:16 | 7:37 |
| 3 | 13.4 | 6:16 | 7:37 |
| 4 | 13.4 | 6:16 | 7:38 |
| 5 | 13.4 | 6:16 | 7:39 |
| 6 | 13.4 | 6:16 | 7:39 |
| 7 | 13.4 | 6:17 | 7:40 |
| 8 | 13.4 | 6:17 | 7:41 |
| 9 | 13.4 | 6:17 | 7:41 |
| 10 | 13.4 | 6:17 | 7:42 |
| 11 | 13.4 | 6:18 | 7:43 |
| 12 | 13.4 | 6:18 | 7:43 |
| 13 | 13.4 | 6:18 | 7:44 |
| 14 | 13.4 | 6:18 | 7:44 |
| 15 | 13.4 | 6:19 | 7:45 |
| 16 | 13.4 | 6:19 | 7:45 |
| 17 | 13.4 | 6:20 | 7:46 |
| 18 | 13.4 | 6:20 | 7:46 |
| 19 | 13.4 | 6:20 | 7:47 |
| 20 | 13.4 | 6:21 | 7:48 |
| 21 | 13.4 | 6:21 | 7:48 |
| 22 | 13.4 | 6:22 | 7:48 |
| 23 | 13.4 | 6:22 | 7:49 |
| 24 | 13.4 | 6:23 | 7:49 |
| 25 | 13.4 | 6:23 | 7:50 |
| 26 | 13.4 | 6:24 | 7:50 |
| 27 | 13.4 | 6:24 | 7:51 |
| 28 | 13.4 | 6:25 | 7:51 |
| 29 | 13.4 | 6:25 | 7:51 |
| 30 | 13.4 | 6:26 | 7:52 |
| 31 | 13.4 | 6:26 | 7:52 |
Solar energy in December
Average shortwave solar energy reaching the ground each day in December, about 5.64 kWh/m² — the sunniest month for solar.
For context, solar energy here swings from a low near 3.31 kWh/m² to a high of 5.64 kWh/m² in December across the year — December's 5.64 kWh/m² sits near the top of that range.
| 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) | 5.6 | 5.6 | 5.6 | 5.6 | 5.6 | 5.6 | 5.6 | 5.6 | 5.6 | 5.6 | 5.6 | 5.6 | 5.6 | 5.6 | 5.6 | 5.6 | 5.6 | 5.6 | 5.6 | 5.6 | 5.6 | 5.7 | 5.6 | 5.6 | 5.6 | 5.6 | 5.6 | 5.6 | 5.6 | 5.5 | 5.5 |
| 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 | 5.6 | Bright |
| 2 | 5.6 | Bright |
| 3 | 5.6 | Bright |
| 4 | 5.6 | Bright |
| 5 | 5.6 | Bright |
| 6 | 5.6 | Bright |
| 7 | 5.6 | Bright |
| 8 | 5.6 | Bright |
| 9 | 5.6 | 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 | 5.6 | Bright |
| 17 | 5.6 | Bright |
| 18 | 5.6 | Bright |
| 19 | 5.6 | Bright |
| 20 | 5.6 | Bright |
| 21 | 5.6 | Bright |
| 22 | 5.7 | Bright |
| 23 | 5.6 | Bright |
| 24 | 5.6 | Bright |
| 25 | 5.6 | Bright |
| 26 | 5.6 | Bright |
| 27 | 5.6 | Bright |
| 28 | 5.6 | Bright |
| 29 | 5.6 | Bright |
| 30 | 5.5 | Bright |
| 31 | 5.5 | Bright |
Hazard calendar for Guarulhos
In December, Guarulhos sits inside its rainy season season. The full year is below, with each hazard's peak months called out.
Guarulhos's rainy season runs October–March, when most of the year's rain falls.
Is December a good time to visit Guarulhos?
Our two travel scores rate December for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
December is a reasonable time to visit Guarulhos for sightseeing.
What to pack for Guarulhos in December
From December's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In December, Guarulhos sees daytime highs around 27°C and nights near 18°C. Pack rain gear. Worth having: light clothes and sun protection. About 21 days see rain.
Sea temperature near Guarulhos in December
The nearest coast averages about 25°C in December — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 62 km away) is warmest in February at about 27°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) | 27 | 27 | 27 | 26 | 24 | 22 | 21 | 21 | 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 | 21 | Refreshing |
| Sep | 21 | Refreshing |
| Oct | 22 | Refreshing |
| Nov | 23 | Refreshing |
| Dec | 25 | Warm |
UV index in Guarulhos in December
Clear-sky midday UV in December peaks around 14 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Guarulhos peaks around February 8 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 14 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 | 15 | 10 | 9 | 7 | 6 | 5 | 7 | 8 | 11 | 12 | 14 |
| Level | Extreme | Extreme | Extreme | Very high | High | High | Moderate | Very high | Very high | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 14 | Extreme |
| Feb | 15 | Extreme |
| Mar | 10 | Extreme |
| Apr | 9 | Very high |
| May | 7 | High |
| Jun | 6 | High |
| Jul | 5 | Moderate |
| Aug | 7 | Very high |
| Sep | 8 | Very high |
| Oct | 11 | Extreme |
| Nov | 12 | Extreme |
| Dec | 14 | Extreme |
Air quality in Guarulhos in December
Average fine-particle pollution (PM2.5) through the year — so you can see where December falls, not just the annual average.
Air quality in Guarulhos is worst in June — around 22 µg/m³ PM2.5 (moderate), about 2.3× the cleanest month (December, 10 µg/m³).
Seasonal pattern from CAMS reanalysis, scaled to Guarulhos's WHO annual average of 15.2 µg/m³.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 10 | 11 | 13 | 15 | 20 | 22 | 22 | 19 | 17 | 13 | 10 | 10 |
| Level | Good | Good | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 10 | Good |
| Feb | 11 | Good |
| Mar | 13 | Moderate |
| Apr | 15 | Moderate |
| May | 20 | Moderate |
| Jun | 22 | Moderate |
| Jul | 22 | Moderate |
| Aug | 19 | Moderate |
| Sep | 17 | Moderate |
| Oct | 13 | Moderate |
| Nov | 10 | Good |
| Dec | 10 | Good |
Where is Guarulhos?
Guarulhos sits at 23.5°S, 46.5°W, 774 m above sea level, in Brazil. The nearest listed city is Cangaiba, 4.0 km away.
Topography around Guarulhos
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Guarulhos.
Within 3 km, the terrain around Guarulhos has only modest variations in elevation — a maximum elevation change of 92 m around an average of 757 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 493 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,031 m.
The land around Guarulhos is covered by artificial surfaces (81%) within 3 km, artificial surfaces (58%) and trees (35%) within 16 km, and trees (56%) 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 Guarulhos (-23.4628°, -46.5333°, elevation 774 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).