The climate in Smithfield during September can be summarized as warm, humid and damp.
September is in the fall / autumn in Smithfield and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a muggy 28°C (82°F), whilst at night 15°C (58°F) is normal.
| Daytime temperature | 28°C 82.3°F | 
|---|---|
| Nightly temperature | 14.7°C 58.4°F | 
| Average temperature | 21.3°C 70.3°F | 
| Daily sunshine | 8 hrs | 
| Avg rainfall | 105 mm 4.1 ins | 
| Rainy days | 7 days | 
| Sea temperature | 26°C 78.8°F | 
| Humidity | 77% | 
| Windspeed | 12.2kph 8 mph | 
On average September is the 6th wettest month of the year in Smithfield with around 105mm 4.1 inches of rain making it a damp time to visit. This rainfall is typically spread over 7 days, although this may vary considerably.
On the flip side this corresponds to an average of 8 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 Smithfield in September 2025.
Best places to visit in September
| Hottest month: | July | 31.3°C 88.3°F | 
|---|---|---|
| Driest month: | November | 81mm 3.2ins | 
| Sunniest month: | April | 9.2hrs | 
| Coldest month: | January | 10.1°C 50.2°F | 
| Wettest month: | July | 140mm 5.5ins | 
 
	 
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