7-day weather forecast for Guarulhos
7-day weather forecast for Guarulhos: 21°C, Heavy drizzle, Humidity 71%, Wind 9 km/h.
Guarulhos sits at 23.5° south latitude, in the tropics, 743 m above sea level, in the America/Sao_Paulo time zone. Over the week ahead highs range from 22° to 26° and lows from 12° to 17°, averaging 19°.
Forecast rainfall totals 15 mm, and 3 of the seven days carry a chance above 50%. Today the sun rises at 05:31 and sets at 18:11: 12:40 of daylight.
| Conditions | high | low | rain | Wind | UV index | |
|---|---|---|---|---|---|---|
| Today | Rain showers | 22° | 15° | 100% | 13 km/h | 4 |
| Tomorrow | Light drizzle | 24° | 14° | 12% | 16 km/h | 9 |
| Mon, Oct 19 | Light drizzle | 23° | 13° | 10% | 12 km/h | 7 |
| Tue, Oct 20 | Overcast | 24° | 12° | 0% | 14 km/h | 6 |
| Wed, Oct 21 | Overcast | 24° | 14° | 18% | 13 km/h | 7 |
| Thu, Oct 22 | Light drizzle | 24° | 16° | 58% | 12 km/h | 3 |
| Fri, Oct 23 | Light drizzle | 26° | 17° | 80% | 12 km/h | 5 |
Weather data by Open-Meteo (ECMWF, GFS, ICON models and national weather services). Updated every 15 minutes.
Weather in Guarulhos month by month
The table gathers the 2016-2025 climate normals for Guarulhos: average highs and lows, total rainfall and number of rainy days for each month of the year.
Guarulhos has an annual mean temperature of 20.1°. The warmest month is January, when highs sit around 26.9°; the coldest is July, with average lows of 11.2°. The 15.7° gap between those two ends of the calendar is the measure of how much the year swings here.
Rainfall totals about 1,311 mm a year, spread over roughly 158 rainy days. The wettest month is January, averaging 247.8 mm across 25 days; the driest is July, with 23.5 mm.
| Month | Average high | Average low | Rainfall | Rainy days |
|---|---|---|---|---|
| January | 26.9° | 18.6° | 247.8 mm | 25 |
| February | 26.8° | 18.3° | 177.8 mm | 19 |
| March | 26.6° | 18° | 151.3 mm | 19 |
| April | 24.7° | 16.1° | 71.5 mm | 10 |
| May | 22.8° | 13.7° | 49.8 mm | 7 |
| June | 21.6° | 12.5° | 47.7 mm | 7 |
| July | 21.8° | 11.2° | 23.5 mm | 3 |
| August | 22.6° | 12.2° | 50.2 mm | 6 |
| September | 25.9° | 14.3° | 49 mm | 7 |
| October | 25.4° | 15.7° | 133.7 mm | 17 |
| November | 25.3° | 15.7° | 150.3 mm | 17 |
| December | 26.9° | 17.6° | 158.3 mm | 21 |
When to visit Guarulhos
For travellers who plan around the weather, April–September tend to be the most comfortable stretch: average highs between 21.6° and 25.9° and rainfall below the yearly average.
What to expect each month
- In January, highs sit near 26.9° and lows near 18.6°, with about 247.8 mm of rain over 25 days.
- In February, highs sit near 26.8° and lows near 18.3°, with about 177.8 mm of rain over 19 days.
- In March, highs sit near 26.6° and lows near 18°, with about 151.3 mm of rain over 19 days.
- In April, highs sit near 24.7° and lows near 16.1°, with about 71.5 mm of rain over 10 days.
- In May, highs sit near 22.8° and lows near 13.7°, with about 49.8 mm of rain over 7 days.
- In June, highs sit near 21.6° and lows near 12.5°, with about 47.7 mm of rain over 7 days.
- In July, highs sit near 21.8° and lows near 11.2°, with about 23.5 mm of rain over 3 days.
- In August, highs sit near 22.6° and lows near 12.2°, with about 50.2 mm of rain over 6 days.
- In September, highs sit near 25.9° and lows near 14.3°, with about 49 mm of rain over 7 days.
- In October, highs sit near 25.4° and lows near 15.7°, with about 133.7 mm of rain over 17 days.
- In November, highs sit near 25.3° and lows near 15.7°, with about 150.3 mm of rain over 17 days.
- In December, highs sit near 26.9° and lows near 17.6°, with about 158.3 mm of rain over 21 days.
Recorded extremes
Across 2016-2025, the thermometer reached 36.7° at the top of the series and fell to 0.3° at the bottom. These are observed values, not averages: they show what the city has actually faced.
Normals computed from the ERA5 reanalysis (Copernicus/ECMWF), 2016-2025 series.
FAQ
What is the temperature in Guarulhos right now?
It is 21°C in Guarulhos right now, with heavy drizzle. It feels like 21°C.
Will it rain in Guarulhos today?
The peak chance of rain today is 100%, with about 5.3 mm expected.
What will the weather be tomorrow in Guarulhos?
Tomorrow the high is 24° and the low 14°, with light drizzle.
Where does the data come from and how often is it updated?
Data comes from the ECMWF, GFS and ICON models and national weather services via Open-Meteo, updated every 15 minutes.
What is the warmest month in Guarulhos?
The warmest month is January, with average highs of 26.9° and lows of 18.6°.
Does it rain a lot in Guarulhos?
The city gets about 1,311 mm a year over 158 rainy days. The wettest month is January, with 247.8 mm.
When is the best time to visit Guarulhos?
On weather grounds, April–September combine the most agreeable temperatures with below-average rainfall.