August weather forecast
Fredrikstad, Norway

The hot summer season continues into August, albeit with some decline in temperatures. The sea temperature remains warm despite the peak having passed in July. With daylight hours beginning to recede from their summer maximum, signs of the impending fall start to emerge. The highest rainfall of the year recorded at 84mm (3.31") over 16 days lends weight to this transition. However, the month retains a mostly summer-like feel, with sufficient heat and abundant sunshine.

Temperature

August's presence in Fredrikstad marks an average high-temperature of a still pleasant 20°C (68°F), subtly varied from July's 21°C (69.8°F). An average low-temperature of 10°C (50°F) is observed during August nights.

Rainfall

In Fredrikstad, in August, it is raining for 16 days, with typically 84mm (3.31") of accumulated precipitation. Throughout the year, there are 179 rainfall days, and 808mm (31.81") of precipitation is accumulated.

Sea temperature

With an average sea temperature of 18.4°C (65.1°F), August is the month with the warmest seawater in Fredrikstad.
Note: Most people find it challenging to enjoy swimming in water that is 18.4°C (65.1°F). As water temperature falls below 21°C (69.8°F), controlling breathing grows increasingly difficult.

Daylight

In Fredrikstad, the average length of the day in August is 15h and 27min.
On the first day of the month, sunrise is at 05:03 and sunset at 21:41. On the last day of August, sunrise is at 06:12 and sunset at 20:20 CEST.

Sunshine

The average sunshine in August is 7h.

UV index

In Fredrikstad, the average daily maximum UV index in August is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum UV index of 4 during August translates into these guidelines:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.