The climate in Biggar during September can be summarized as mild and reasonably dry.
September is in the fall / autumn in Biggar and is typically the 5th warmest month of the year. Daytime maximum temperatures average around a cool 17°C (63°F), whilst at night 4°C (40°F) is normal.
| Daytime temperature | 17.2°C 62.9°F |
|---|---|
| Nightly temperature | 4.3°C 39.7°F |
| Average temperature | 10.7°C 51.3°F |
| Daily sunshine | 6.6 hrs |
| Avg rainfall | 31 mm 1.2 ins |
| Rainy days | 8 days |
| Sea temperature | 11°C 51.9°F |
| Humidity | 65% |
| Windspeed | 15.5kph 10 mph |
On average September is the 5th wettest month of the year in Biggar with around 31mm 1.2 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 8 days, although this may vary considerably.
On the flip side this corresponds to an average of 6.6 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 Biggar in September 2025.
Best places to visit in September
| Hottest month: | July | 24.5°C 76.1°F |
|---|---|---|
| Driest month: | February | 13mm 0.5ins |
| Sunniest month: | July | 11.3hrs |
| Coldest month: | January | -11.8°C 10.8°F |
| Wettest month: | June | 63mm 2.5ins |