Best time to visit Guarulhos
The best time to visit Guarulhos is April–September, judged on twenty years of weather records and the events worth going for.
Guarulhos, Sao Paulo, Brazil
°C
mm
- Average daily high and low
- Precipitation
- Good month
- Best month
- Made good or best by an event
| Month | Average daily high | Average daily low | Precipitation | Verdict |
|---|---|---|---|---|
| January | 27.3 °C / 81 °F | 19.3 °C / 67 °F | 218 mm / 8.6 in | neither best nor good |
| February | 27.9 °C / 82 °F | 19.4 °C / 67 °F | 174 mm / 6.8 in | neither best nor good |
| March | 27.1 °C / 81 °F | 18.9 °C / 66 °F | 145 mm / 5.7 in | neither best nor good |
| April | 25.2 °C / 77 °F | 16.9 °C / 62 °F | 71 mm / 2.8 in | best month |
| May | 22.9 °C / 73 °F | 14.3 °C / 58 °F | 49 mm / 1.9 in | best month |
| June | 22.1 °C / 72 °F | 13.1 °C / 56 °F | 47 mm / 1.8 in | best month |
| July | 22.3 °C / 72 °F | 12.3 °C / 54 °F | 49 mm / 1.9 in | best month |
| August | 23.4 °C / 74 °F | 13.1 °C / 56 °F | 44 mm / 1.7 in | best month |
| September | 25.2 °C / 77 °F | 15 °C / 59 °F | 72 mm / 2.8 in | best month |
| October | 25.3 °C / 78 °F | 16.5 °C / 62 °F | 120 mm / 4.7 in | good month |
| November | 25.4 °C / 78 °F | 17 °C / 63 °F | 152 mm / 6 in | good month |
| December | 26.9 °C / 80 °F | 18.7 °C / 66 °F | 181 mm / 7.1 in | neither best nor good |
Good and best months depend on more than temperature, rain and events. How they are chosen
Each activity on this page has its own good and best months, rated on twenty years of daily weather records. Which measures count, and how much, depends on the activity: humidity for exploring outdoors, wind for the beach, hiking and skiing, snow for skiing alone. Between them, the activities are rated on:
- Daytime highs
- Night-time lows
- How warm it feels
- Humidity
- How much of the day is sunny
- Hours of daylight
- Monthly rainfall
- How many days it rains
- Days of heavy rain
- Wind
- Snowfall and days with snow
- Major events, such as festivals
The chart shows the good and best months for exploring outdoors.
The event icon marks a month that an event lifts to good or best, such as a festival or a natural spectacle. Choose “Weather only” in the toolbar to rate the months on weather alone.
Best months by activity
Exploring outdoors
Mild days and nights, mostly dry and bright. The default for 'when should I go'.
- JJanuary: neither
- FFebruary: neither
- MMarch: neither
- AApril: best
- MMay: best
- JJune: best
- JJuly: best
- AAugust: best
- SSeptember: best
- OOctober: good
- NNovember: good
- DDecember: neither
- Best
- April–September
- Good
- October–November
Why these months
April · best
In its favour: feels like (high) 26.6 °C / 80 °F, average daily high 25.2 °C / 77 °F, share of daylight that is sunny 79%, precipitation 71 mm / 2.8 in, days with heavy rain 2.2 days, average daily low 16.9 °C / 62 °F, wet days 11 days.
Against: relative humidity 82%.
May · best
In its favour: feels like (high) 22.7 °C / 73 °F, average daily high 22.9 °C / 73 °F, precipitation 49 mm / 1.9 in, share of daylight that is sunny 74%, days with heavy rain 1.4 days, wet days 7 days, average daily low 14.3 °C / 58 °F.
Against: relative humidity 80%.
June · best
In its favour: feels like (high) 21.5 °C / 71 °F, average daily high 22.1 °C / 72 °F, precipitation 47 mm / 1.8 in, share of daylight that is sunny 74%, wet days 5.7 days, days with heavy rain 1.7 days, average daily low 13.1 °C / 56 °F.
Against: relative humidity 79%.
July · best
In its favour: feels like (high) 21.3 °C / 70 °F, average daily high 22.3 °C / 72 °F, precipitation 49 mm / 1.9 in, share of daylight that is sunny 77%, wet days 5.2 days, days with heavy rain 1.7 days, average daily low 12.3 °C / 54 °F, relative humidity 76%.
August · best
In its favour: feels like (high) 22.8 °C / 73 °F, average daily high 23.4 °C / 74 °F, precipitation 44 mm / 1.7 in, share of daylight that is sunny 76%, wet days 5.3 days, days with heavy rain 1.5 days, average daily low 13.1 °C / 56 °F, relative humidity 74%.
September · best
In its favour: feels like (high) 25.4 °C / 78 °F, average daily high 25.2 °C / 77 °F, share of daylight that is sunny 77%, precipitation 72 mm / 2.8 in, wet days 8.4 days, days with heavy rain 2.4 days, average daily low 15 °C / 59 °F, relative humidity 75%.
October · good
In its favour: feels like (high) 26.9 °C / 80 °F, average daily high 25.3 °C / 78 °F, share of daylight that is sunny 67%, precipitation 120 mm / 4.7 in, average daily low 16.5 °C / 62 °F, days with heavy rain 4 days.
Against: wet days 14.8 days, relative humidity 80%.
November · good
In its favour: feels like (high) 27.5 °C / 82 °F, average daily high 25.4 °C / 78 °F, share of daylight that is sunny 69%, average daily low 17 °C / 63 °F.
Against: wet days 16.9 days, precipitation 152 mm / 6 in, days with heavy rain 5.8 days, relative humidity 81%.
Hiking and trekking
Cool enough to climb in, dry enough to enjoy, long enough days.
- JJanuary: neither
- FFebruary: neither
- MMarch: neither
- AApril: good
- MMay: best
- JJune: best
- JJuly: best
- AAugust: best
- SSeptember: good
- OOctober: neither
- NNovember: neither
- DDecember: neither
- Best
- May–August
- Good
- April, September
Why these months
April · good
In its favour: precipitation 71 mm / 2.8 in, average daily high 25.2 °C / 77 °F, days with heavy rain 2.2 days, share of daylight that is sunny 79%, daylight per day 11.5 h, wet days 11 days, wind (daily max) 15 km/h / 9 mph, average daily low 16.9 °C / 62 °F.
Against: feels like (high) 26.6 °C / 80 °F.
May · best
In its favour: average daily high 22.9 °C / 73 °F, precipitation 49 mm / 1.9 in, wet days 7 days, days with heavy rain 1.4 days, share of daylight that is sunny 74%, average daily low 14.3 °C / 58 °F, feels like (high) 22.7 °C / 73 °F, daylight per day 11 h, wind (daily max) 15 km/h / 9 mph.
June · best
In its favour: average daily high 22.1 °C / 72 °F, precipitation 47 mm / 1.8 in, wet days 5.7 days, days with heavy rain 1.7 days, feels like (high) 21.5 °C / 71 °F, average daily low 13.1 °C / 56 °F, share of daylight that is sunny 74%, daylight per day 10.7 h, wind (daily max) 15 km/h / 9 mph.
July · best
In its favour: average daily high 22.3 °C / 72 °F, precipitation 49 mm / 1.9 in, wet days 5.2 days, days with heavy rain 1.7 days, feels like (high) 21.3 °C / 70 °F, average daily low 12.3 °C / 54 °F, share of daylight that is sunny 77%, daylight per day 10.8 h, wind (daily max) 15 km/h / 9 mph.
August · best
In its favour: precipitation 44 mm / 1.7 in, average daily high 23.4 °C / 74 °F, wet days 5.3 days, days with heavy rain 1.5 days, average daily low 13.1 °C / 56 °F, share of daylight that is sunny 76%, feels like (high) 22.8 °C / 73 °F, daylight per day 11.3 h, wind (daily max) 16 km/h / 10 mph.
September · good
In its favour: precipitation 72 mm / 2.8 in, wet days 8.4 days, average daily high 25.2 °C / 77 °F, days with heavy rain 2.4 days, share of daylight that is sunny 77%, daylight per day 12 h, average daily low 15 °C / 59 °F, wind (daily max) 17 km/h / 11 mph, feels like (high) 25.4 °C / 78 °F.
An activity is listed only where it applies: skiing at ski destinations, beach and swimming at beach destinations. The nearest ski area is Los Penitentes, 2502 km away.
Weather averages
Monthly averages over twenty years, 2006–2025. Highs, lows and precipitation are in the chart at the top.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Feels like (high) | 30.4 °C | 31.2 °C | 30 °C | 26.6 °C | 22.7 °C | 21.5 °C | 21.3 °C | 22.8 °C | 25.4 °C | 26.9 °C | 27.5 °C | 29.8 °C |
| Days with heavy rain | 7.8 days | 5.9 days | 5 days | 2.2 days | 1.4 days | 1.7 days | 1.7 days | 1.5 days | 2.4 days | 4 days | 5.8 days | 6.8 days |
| Time rain usually falls | 3 pm | 3 pm | 3 pm | 3 pm | 3 pm | 4 pm | 7 pm | 11 am | 4 pm | 2 pm | 3 pm | 3 pm |
| Sunshine per day | 9.2 h | 9.7 h | 9.4 h | 9.1 h | 8.1 h | 7.9 h | 8.3 h | 8.6 h | 9.2 h | 8.5 h | 9.2 h | 9.7 h |
| Relative humidity | 81% | 80% | 82% | 82% | 80% | 79% | 76% | 74% | 75% | 80% | 81% | 80% |
Air quality
Averaged over a shorter period (2022–2025) than the twenty-year averages above, and not counted towards good or best months.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Air pollution (PM2.5) 2022–2025 | 19.9 µg/m³ | 23.8 µg/m³ | 24.6 µg/m³ | 23.2 µg/m³ | 30.2 µg/m³ | 30.8 µg/m³ | 26.9 µg/m³ | 26.8 µg/m³ | 28.2 µg/m³ | 21.4 µg/m³ | 19.3 µg/m³ | 19.4 µg/m³ |
| Air pollution (PM2.5, daily peak) 2022–2025 | 35.7 µg/m³ | 42.5 µg/m³ | 40.8 µg/m³ | 40.2 µg/m³ | 55.4 µg/m³ | 58.3 µg/m³ | 45.8 µg/m³ | 48.5 µg/m³ | 48.9 µg/m³ | 37.4 µg/m³ | 33.6 µg/m³ | 34.2 µg/m³ |
- Good 15 µg/m³ or less
- Fair 15 to 25 µg/m³
- Moderate 25 to 37.5 µg/m³
- Poor 37.5 to 50 µg/m³
- Very poor 50 to 75 µg/m³
- Extremely poor over 75 µg/m³
Each figure is compared with the World Health Organization's guideline for a day's air, 15 µg/m³ or less, and with its interim targets above that. The words are ours: the WHO does not name its steps. The figures are modelled monthly averages, so single days can be well above them. The daily peak is the average of each day's highest hour, shaded on the same scale.