Weather in Guarulhos on 18 August 2026
Preliminary outlook for 18 August 2026
A preliminary estimate based on the 2019–2025 archive: daytime around +28°C and nighttime around +17°C, average precipitation 0.6 mm, wind around 3 m/s, humidity around 50%.
This is a climate-based estimate, not a precise long-range forecast. It is replaced by hourly data when the date enters the forecast window.
+17°C
Weather archive — latest year: 2025
Clear/Sunny
Weather archive — latest year: 2025
Nighttime: +14°C
Precipitation: 0 mm
Wind: 3 — 5 m/s
Humidity: 65%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +24°C | Sun hours | 11 h |
| UV index | 5 | Cloud cover (avg.) | 4% |
| Pressure (avg.) | 766 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +18°C | Dew point (avg.) | +11°C |
| Heat index (avg.) | +18°C | Wind chill (avg.) | +18°C |
| Wind gusts (max.) | 6 m/s | Wind direction (avg.) | 111° ↘ (SE) |
Sunrise
06:29
Duration
11 h 22 min
Sunset
17:51
Moonrise
02:38
Moonset
13:14
Moon phase
Last Quarter
Illumination
29%
+24°C
Weather archive — for 2024 year
Clear/Sunny
Weather archive — for 2024 year
Nighttime: +18°C
Precipitation: 0 mm
Wind: 2 — 2 m/s
Humidity: 30%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +32°C | Sun hours | 11 h |
| UV index | 6 | Cloud cover (avg.) | 0% |
| Pressure (avg.) | 764 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +22°C | Dew point (avg.) | +6°C |
| Heat index (avg.) | +22°C | Wind chill (avg.) | +22°C |
| Wind gusts (max.) | 4 m/s | Wind direction (avg.) | 61° ↑ (N) |
Sunrise
06:29
Duration
11 h 22 min
Sunset
17:51
Moonrise
16:46
Moonset
05:40
Moon phase
Waxing Gibbous
Illumination
93%
+23°C
Weather archive — for 2023 year
Clear/Sunny
Weather archive — for 2023 year
Nighttime: +17°C
Precipitation: 0 mm
Wind: 3 — 6 m/s
Humidity: 43%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +30°C | Sun hours | 11 h |
| UV index | 6 | Cloud cover (avg.) | 13% |
| Pressure (avg.) | 759 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +23°C | Dew point (avg.) | +12°C |
| Heat index (avg.) | +23°C | Wind chill (avg.) | +23°C |
| Wind gusts (max.) | 10 m/s | Wind direction (avg.) | 183° ↖ (NNW) |
Sunrise
06:29
Duration
11 h 22 min
Sunset
17:51
Moonrise
07:54
Moonset
19:49
Moon phase
Waxing Crescent
Illumination
9%
+23°C
Weather archive — for 2022 year
Clear/Sunny
Weather archive — for 2022 year
Nighttime: +18°C
Precipitation: 0 mm
Wind: 5 — 7 m/s
Humidity: 48%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +31°C | Sun hours | 11 h |
| UV index | 6 | Cloud cover (avg.) | 17% |
| Pressure (avg.) | 758 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +22°C | Dew point (avg.) | +12°C |
| Heat index (avg.) | +22°C | Wind chill (avg.) | +22°C |
| Wind gusts (max.) | 14 m/s | Wind direction (avg.) | 172° ↑ (N) |
Sunrise
06:29
Duration
11 h 22 min
Sunset
17:51
Moonrise
No moonrise
Moonset
10:51
Moon phase
Waning Gibbous
Illumination
54%
+24°C
Weather archive — for 2021 year
Clear/Sunny
Weather archive — for 2021 year
Nighttime: +19°C
Precipitation: 0 mm
Wind: 2 — 2 m/s
Humidity: 44%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +31°C | Sun hours | 11 h |
| UV index | 6 | Cloud cover (avg.) | 5% |
| Pressure (avg.) | 764 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +23°C | Dew point (avg.) | +12°C |
| Heat index (avg.) | +23°C | Wind chill (avg.) | +23°C |
| Wind gusts (max.) | 5 m/s | Wind direction (avg.) | 63° ↑ (NNE) |
Sunrise
06:29
Duration
11 h 22 min
Sunset
17:51
Moonrise
13:58
Moonset
03:06
Moon phase
Waxing Gibbous
Illumination
69%
+19°C
Weather archive — for 2020 year
Heavy rain at times
Weather archive — for 2020 year
Nighttime: +17°C
Precipitation: 4.3 mm
Wind: 2 — 3 m/s
Humidity: 75%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +22°C | Sun hours | 7 h |
| UV index | 4 | Cloud cover (avg.) | 66% |
| Pressure (avg.) | 761 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 9 km | Sea temperature | — |
| Feels like (avg.) | +18°C | Dew point (avg.) | +15°C |
| Heat index (avg.) | +18°C | Wind chill (avg.) | +18°C |
| Wind gusts (max.) | 6 m/s | Wind direction (avg.) | 165° ↘ (SE) |
Sunrise
06:29
Duration
11 h 22 min
Sunset
17:51
Moonrise
06:13
Moonset
17:29
Moon phase
New Moon
Illumination
0%
+22°C
Weather archive — for 2019 year
Clear/Sunny
Weather archive — for 2019 year
Nighttime: +16°C
Precipitation: 0 mm
Wind: 3 — 4 m/s
Humidity: 47%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +28°C | Sun hours | 11 h |
| UV index | 6 | Cloud cover (avg.) | 12% |
| Pressure (avg.) | 761 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +21°C | Dew point (avg.) | +10°C |
| Heat index (avg.) | +21°C | Wind chill (avg.) | +21°C |
| Wind gusts (max.) | 9 m/s | Wind direction (avg.) | 246° ↖ (NW) |
Sunrise
06:29
Duration
11 h 22 min
Sunset
17:51
Moonrise
20:33
Moonset
08:27
Moon phase
Waning Gibbous
Illumination
78%
Weather in Guarulhos on 18 August in previous years
| Year | Day | Nighttime | Average | Sun | UV | Humidity | Wind |
|---|---|---|---|---|---|---|---|
| 2025 |
+24°C
|
+14°C
|
+17°C | 11 h | 5 | 65% | 3 — 5 m/s |
| 2024 |
+32°C
|
+18°C
|
+24°C | 11 h | 6 | 30% | 2 — 2 m/s |
| 2023 |
+30°C
|
+17°C
|
+23°C | 11 h | 6 | 43% | 3 — 6 m/s |
| 2022 |
+31°C
|
+18°C
|
+23°C | 11 h | 6 | 48% | 5 — 7 m/s |
| 2021 |
+31°C
|
+19°C
|
+24°C | 11 h | 6 | 44% | 2 — 2 m/s |
| 2020 |
+22°C
|
+17°C
|
+19°C | 7 h | 4 | 75% | 2 — 3 m/s |
| 2019 |
+28°C
|
+16°C
|
+22°C | 11 h | 6 | 47% | 3 — 4 m/s |