The climate in Macaé during May can be summarized as warm, humid and reasonably dry.
May is in the fall / autumn in Macaé and is typically the 5th coldest month of the year. Daytime maximum temperatures average around a muggy 26°C (80°F), whilst at night 17°C (63°F) is normal.
| Daytime temperature | 26.4°C 79.5°F | 
|---|---|
| Nightly temperature | 17.1°C 62.8°F | 
| Average temperature | 21.7°C 71.1°F | 
| Daily sunshine | 7 hrs | 
| Avg rainfall | 71 mm 2.8 ins | 
| Rainy days | 13 days | 
| Sea temperature | 25.1°C 77.2°F | 
| Humidity | 83% | 
| Windspeed | 5.2kph 3 mph | 
On average May is the 5th driest month of the year in Macaé with around 71mm 2.8 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 13 days, although this may vary considerably.
On the flip side this corresponds to an average of 7 hours of sunshine per day.
				
						
						The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Macaé in May 2025.
| Hottest month: | February | 29.6°C 85.3°F | 
|---|---|---|
| Driest month: | June | 42mm 1.7ins | 
| Sunniest month: | June | 7.2hrs | 
| Coldest month: | July | 24.6°C 76.3°F | 
| Wettest month: | December | 177mm 7ins |