Last updated: August 27, 2025
In September, the average temperature in Instow, United Kingdom hovers around 15°C (59°F). Expect a minimum of 6°C (42°F) and a maximum of 26°C (80°F). With 82 mm (3.2 in) of precipitation spread over 13 days, the air feels quite humid with an average humidity of 79%. Perfect for cozy days indoors or exploring the vibrant surroundings!
In September in Instow, the average temperature is 15°C (59°F), with maximums reaching up to 26°C (80°F) and minimums dipping as low as 6°C (42°F). This pleasant range of temperatures makes Instow an ideal destination for travelers seeking mild weather and outdoor adventures.
In Instow in September, the total precipitation amount is 82 mm (3.2 in), occurring over the course of 13 days.
In Instow in September humidity is 79%. With an average temperature of 15°C (59°F), this humidity feels like a muggy embrace that clings to your skin, making outdoor activities somewhat uncomfortable. Travelers may find themselves frequently seeking shelter or refreshing drinks to combat the warm, damp air, as the moisture in the atmosphere feels particularly heavy, especially during longer excursions.
In Instow in September, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Instow, you can refer to this Hourly UV Index in Instow.
UV Risk Categories
Weather in Instow varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Instow, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 7°C (44°F) | 81 mm (3.2 inches) | 88% | low |
| February Weather | 7°C (45°F) | 88 mm (3.4 inches) | 88% | low |
| March Weather | 8°C (46°F) | 91 mm (3.6 inches) | 86% | moderate |
| April Weather | 9°C (49°F) | 49 mm (1.9 inches) | 84% | high |
| May Weather | 12°C (53°F) | 66 mm (2.6 inches) | 80% | high |
| June Weather | 15°C (59°F) | 83 mm (3.3 inches) | 80% | very high |
| July Weather | 17°C (62°F) | 74 mm (2.9 inches) | 70% | very high |
| August Weather | 16°C (61°F) | 85 mm (3.3 inches) | 73% | high |
| September Weather | 15°C (59°F) | 82 mm (3.2 inches) | 79% | high |
| October Weather | 12°C (54°F) | 121 mm (4.7 inches) | 89% | moderate |
| November Weather | 10°C (49°F) | 104 mm (4.1 inches) | 90% | low |
| December Weather | 8°C (47°F) | 139 mm (5.5 inches) | 89% | low |