Live Weather & Forecast
Weather in São Martinho
Santa Catarina, Brazil · Real-time conditions & 3-day outlook
30°C
Feels like 41°C
86°F / Feels 106°F
Overcast
São Martinho, Santa Catarina
🌙 Nighttime
Updated: 2026-04-21 17:45
Humidity
75%
Wind
4.7 km/h SSE
Wind Gust
9.4 km/h
Pressure
1009 mb
Visibility
10 km
UV Index
0.2
(Low)
Precipitation
0.35 mm
Cloud Cover
25%
Dew Point
23.6°C
Wind Degree
149°
Air Quality Index
US EPA: Good
UK DEFRA: Low (1)
CO
216.9 μg/m³
NO₂
7.8 μg/m³
O₃
21 μg/m³
SO₂
1.1 μg/m³
PM 2.5
6.7 μg/m³
PM 10
6.8 μg/m³
Today's Hourly Forecast
24-hour breakdown for São Martinho, Santa Catarina
12 AM
21°
Fog
1 AM
21°
Fog
2 AM
21°
Fog
3 AM
21°
Fog
4 AM
21°
Partly Cloudy
5 AM
21°
Fog
6 AM
21°
Fog
7 AM
22°
Mist
8 AM
23°
Partly Cloudy
9 AM
24°
Partly Cloudy
10 AM
26°
Sunny
11 AM
25°
Patchy rain nearby
12 PM
27°
Partly Cloudy
1 PM
29°
Sunny
2 PM
29°
Sunny
3 PM
29°
Sunny
4 PM
28°
Patchy rain nearby
5 PM
30°
Overcast
6 PM
24°
Patchy rain nearby
7 PM
23°
Patchy rain nearby
8 PM
23°
Mist
9 PM
23°
Mist
10 PM
23°
Mist
11 PM
22°
Mist
3-Day Forecast
Daily overview for São Martinho, Santa Catarina
Today
Patchy rain nearby
29°
/
21°
🌧️ 88% chance of rain
💧 Avg. humidity: 90%
💨 Max wind: 6.1 km/h
🌧️ Total precip: 2.43 mm
☀️ UV Index: 9.5
🌅 Sunrise: 05:48 AM
🌇 Sunset: 05:38 PM
🌙 Waxing Crescent
🌑 Moon: 17% lit
Wed, Apr 22
Patchy rain nearby
29°
/
21°
🌧️ 89% chance of rain
💧 Avg. humidity: 89%
💨 Max wind: 7.6 km/h
🌧️ Total precip: 3.29 mm
☀️ UV Index: 12.1
🌅 Sunrise: 05:48 AM
🌇 Sunset: 05:38 PM
🌙 Waxing Crescent
🌑 Moon: 27% lit
Thu, Apr 23
Patchy rain nearby
30°
/
21°
🌧️ 88% chance of rain
💧 Avg. humidity: 87%
💨 Max wind: 6.8 km/h
🌧️ Total precip: 2.25 mm
☀️ UV Index: 11.9
🌅 Sunrise: 05:48 AM
🌇 Sunset: 05:37 PM
🌙 Waxing Crescent
🌑 Moon: 38% lit
Best Time to Visit São Martinho
Plan your trip to São Martinho, Brazil around the most favorable weather conditions.
Peak Season
November – April
Dry season — low humidity, clear skies, comfortable temperatures.
Shoulder Season
May, October
Fewer crowds, moderate prices, mild weather.
Off Season
June – September
Wet/monsoon season; heavier rainfall possible.
Frequently Asked Questions
What is the current weather in São Martinho?
Current conditions in São Martinho: Overcast, temperature 30°C, humidity 75%.
What is the best time to visit São Martinho?
The best time to visit São Martinho is typically November – April. Dry season — low humidity, clear skies, comfortable temperatures.
What is the climate like in São Martinho?
São Martinho is located at approximately -10° latitude. It has a tropical or subtropical climate with wet and dry seasons.
Does it rain a lot in São Martinho?
The wettest period in São Martinho is typically during June – September. Wet/monsoon season; heavier rainfall possible.
What should I pack for a trip to São Martinho?
For visits to São Martinho during November – April: light clothing and sun protection. For June – September: layers and a waterproof jacket are recommended.
What country is São Martinho in?
São Martinho is located in Brazil, in the state of Santa Catarina.
What are the public holidays in São Martinho in 2026?
View the 2026 public holidays for São Martinho on our Holidays page.
What are the GPS coordinates used for the weather forecast in São Martinho?
The weather forecast for São Martinho uses coordinates -10, -55.
What is the current temperature outside in São Martinho?
The current outdoor temperature in São Martinho is 30°C (86°F) with overcast.
What is the hourly weather forecast for São Martinho today?
Today's hour-by-hour weather breakdown for São Martinho is shown in the Hourly Forecast section above, including temperature, rain chance, and conditions for each hour of the day.
What is the weather in São Martinho tomorrow hour by hour?
Tomorrow's forecast for São Martinho shows a high of 29°C and a low of 21°C. See the 3-Day Forecast section above for a full hourly breakdown.
What is the chance of rain today in São Martinho?
There is a 88% chance of rain in São Martinho today. Check the hourly forecast above for a time-by-time breakdown of when rain is most likely.
Is it going to rain today in São Martinho?
Yes, there is a 88% chance of rain in São Martinho today — consider carrying an umbrella. Check the hourly forecast above for the most likely rain windows.