September weather forecast
Isle of Man

September in the Isle of Man signifies the start of the autumn season, with temperatures beginning to cool down. Average temperatures during this month usually range from 11°C (51.8°F) to 16°C (60.8°F). This trend can be observed throughout the island, from coastal areas like Douglas, Port Erin, and Peel, to more elevated regions like Snaefell, where the temperatures might be slightly cooler.

In comparison to August, September experiences a decrease in temperatures, coupled with an increase in rainfall. The daylight hours start to reduce as the days become shorter, heralding the transition from summer to autumn.

As September moves into October, the weather continues to cool, with temperatures typically ranging from 9°C (48.2°F) to 14°C (57.2°F). Rainfall tends to increase, and the days become significantly shorter. Nevertheless, September offers an enjoyable time to visit the Isle of Man, with its mild climate and the opportunity to witness the beginning of the vibrant autumnal colours across the island's landscapes.

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• Douglas - September »
  In Douglas in September, during 13.5 rainfall days, 37mm (1.46") of precipitation is typically accumulated. In Douglas in September, the average water temperature is 14°C (57.2°F).
• Ramsey - September »
  On the first day of September in Ramsey, sunrise is at 06:26 and sunset at 20:08. How many days does it rain in September in Ramsey?
• Peel - September »
  In Peel, Isle of Man, in September, during 14 rainfall days, 37mm (1.46") of precipitation is typically accumulated. On the first day of September in Peel sunrise is at 06:27 and sunset at 20:09.
• Port Erin - September »
  In Port Erin in September, it is raining for 13.5 days, with typically 37mm (1.46") of accumulated precipitation. The months with the highest UV index in Port Erin are May through September, with an average maximum UV index of 4.
• Laxey - September »
  September in Laxey is marked by an average high-temperature of a still refreshing 15.2°C (59.4°F), almost identical to the preceding month. The months with the highest UV index in Laxey are May through September, with an average maximum UV index of 4.
• Jurby - September »
  On the first day of September in Jurby sunrise is at 06:26 and sunset at 20:09. The months with the highest UV index in Jurby are May through September, with an average maximum UV index of 4.
• Ballasalla - September »
  In Ballasalla in September, it is raining for 13.5 days, with typically 37mm (1.46") of accumulated precipitation. Ballasalla, Isle of Man, in September witnesses an average high-temperature of a moderate 15.4°C (59.7°F), indicating a slight variation from August's 16.1°C (61°F).
• Bride - September »
  On the first day of September in Bride, Isle of Man, sunrise is at 06:26 and sunset at 20:08. In Bride, during September, the rain falls for 17.2 days and regularly aggregates up to 54mm (2.13") of precipitation.
• Maughold - September »
  The months with the highest UV index in Maughold are May through September, with an average maximum UV index of 4. On the first day of September in Maughold, sunrise is at 06:26 and sunset at 20:08.
• Patrick - September »
  On the last day of September, in Patrick, sunrise is at 07:20 and sunset at 18:57 BST. May through September, with an average maximum UV index of 4, are months with the highest UV index in Patrick, Isle of Man.