Hottest day
28ºC
Tuesday, 11/03
My city
No official warning is active for this municipality right now. That does not guarantee everything is fine: see the rest of the page.
22º14º
Today: high / lowno rain forecast today
Official warnings
No official warning is active for this municipality right now. Warnings for the whole country are in the Storms and alerts section.
Week highlights
Data for Diadema (SP), 9 km away.
Air now in Diadema: IQAr 22 (good).
Hottest day
28ºC
Tuesday, 11/03
Coldest night
14ºC
Wednesday, 10/28
Rainiest day
30.3mm
Thursday, 10/29
49 mm in total this week
Strongest wind gust
37km/h
Friday, 10/30
Highest UV
10very high
Tuesday, 11/03
Each bar runs from the day's low to its high and the colour follows the temperature.
| Day | Rain | High | Low | UV | Gust | IQAr |
|---|---|---|---|---|---|---|
| Wed, 10/28 | 0.3 mm | 22 ºC | 14 ºC | 7.3 | 32 km/h | 46 |
| Thu, 10/29 | 30.3 mm | 21 ºC | 16 ºC | 4.9 | 22 km/h | 25 |
| Fri, 10/30 | 5.1 mm | 26 ºC | 17 ºC | 6.9 | 37 km/h | 129 |
| Sat, 10/31 | 5.8 mm | 23 ºC | 17 ºC | 2.9 | 34 km/h | 88 |
| Sun, 11/01 | 3.6 mm | 25 ºC | 17 ºC | 5.4 | 36 km/h | 197 |
| Mon, 11/02 | 2.1 mm | 27 ºC | 18 ºC | 4.8 | 21 km/h | – |
| Tue, 11/03 | 1.8 mm | 28 ºC | 19 ºC | 10 | 30 km/h | – |
Source: Open-Meteo.com (forecast and CAMS model air quality).
Hour-by-hour rain
The next 24 hours, Brasília time. Each column is a full hour and its height is the rain forecast for it.
Recent rain
The last 30 days, up to October 27. Each column is a day and its height is that day's rain; in orange, days with 50 mm or more.
Rain in October, up to 10/27
186.8mm
The normal rain for this month is not available for this city yet.
Rivers nearby
Paraíba do Sul · 137 km away
Level now: 1.91 m · High
Source: ANA (telemetry); SGB reference levels where they exist. The level is compared with the station's own at this time of year.
Fire, rain and drought
No likely hotspot within 50 km in the last 24 h.
CEMADEN rain gauges within 30 km: the highest 24 h total was 6.6 mm (124 stations with data).
On the official September 2026 map, São Caetano do Sul is in weak drought (s0).
Sources: INPE and NASA FIRMS (fire), CEMADEN (rain), ANA Drought Monitor.
In an emergency, follow Civil Defense: 199. Fire Department: 193. SAMU: 192.
Dashed: the month's average (1991–2020)Rain (mm)
Thu 07:00 to Fri 01:00
30.9 mm over the period, at most 6.3 mm in one hour · 100% chance
Fri 10:00 to 12:00
0.5 mm over the period, at most 0.3 mm in one hour · 50% chance
Fri 14:00 to 19:00
3.7 mm over the period, at most 1.6 mm in one hour · 96% chance
Source: Open-Meteo.com. Model forecast, updated every 3 hours: the timing may change.
Most rain in one day
36.6mm
36.6 mm on September 12, in the last 90 days
Days in a row without rain
1day
Source: Open-Meteo.com, ERA5 reanalysis (a model, not a rain gauge); the latest day may be corrected later. A day without rain: under 1 mm.