August weather forecast
Guernsey

August in Guernsey extends the summer warmth, with temperatures comparable to those experienced in July. Average temperatures continue to range from 17°C (62.6°F) to 20°C (68°F), maintaining the pleasant conditions for outdoor activities and beach visits.

When it comes to rainfall, August sees a slight increase compared to the previous summer months. The island typically experiences around 40mm (1.57") of rain, distributed over about 10 to 12 days of the month. Despite this increase, the climate remains largely dry and sunny, ensuring a comfortable continuation of the summer season.

Compared to July, August's weather conditions are very similar in terms of temperature, with only a modest increase in precipitation. Transitioning into September, temperatures begin to decrease gradually, indicating the onset of the autumn season. At the same time, the rainfall levels tend to rise, marking the end of the summer and the beginning of the slightly cooler and wetter autumn months.

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• Saint Sampson - August »
  On the first day of August in Saint Sampson sunrise is at 05:42 and sunset at 20:50. In Saint Sampson during August, the rain falls for 14 days and regularly aggregates up to 41mm (1.61") of precipitation.
• Guernsey - August »
  Guernsey registers the highest average temperatures during the month of August, with peaks of 17.8°C (64°F) and lows of 15.8°C (60.4°F). August is the month when Guernsey experiences its warmest temperatures, averaging a high of 17.8°C (64°F) and a low of 15.8°C (60.4°F).
• Saint Peter Port - August »
  Saint Peter Port registers the highest average temperatures during the month of August, with peaks of 17.8°C (64°F) and lows of 15.8°C (60.4°F). In Saint Peter Port, Guernsey, in August, during 14 rainfall days, 41mm (1.61") of precipitation is typically accumulated.
• Alderney - August »
  On the first day of August in Alderney, sunrise is at 05:40 and sunset at 20:50. In Alderney, in August, the average water temperature is 17.2°C (63°F).
• Braye du Valle - August »
  Braye du Valle's temperatures peak on average in August, reaching 17.8°C (64°F) at their highest and 15.8°C (60.4°F) at their lowest. On the first day of August in Braye du Valle, sunrise is at 05:42 and sunset at 20:50.
• Fort George - August »
  Temperature records in Fort George mark August as the warmest month, with highs averaging 17.8°C (64°F) and lows at 15.8°C (60.4°F). In Fort George in August, during 14 rainfall days, 41mm (1.61") of precipitation is typically accumulated.
• Saint Andrew - August »
  August registers as the month with the average highest temperatures in Saint Andrew reaching 17.8°C (64°F) at its peak and 15.8°C (60.4°F) at the lowest. In Saint Andrew, during August, the rain falls for 14 days and regularly aggregates up to 41mm (1.61") of precipitation.