September Weather in Katwijk aan den Rijn

Last updated: March 2, 2024

The weather in Katwijk aan den Rijn, Netherlands, during September is characterized by an average temperature of 16°C (61°F). Highs can soar to 24°C (76°F), while lows may dip to 9°C (49°F). Typically, the humidity level in Katwijk aan den Rijn throughout September hovers around 83%.

9°C (49°F)

Minimum temperature

16°C (61°F)

Average temperature

24°C (76°F)

Maximum temperature

83%

Humidity

Precipitation and Sunshine hours

In September, Katwijk aan den Rijn averages 96 mm (3.8 inches) of rainfall, typically over the course of 13 rainy days. The month enjoys an average of 12 hours 36 minutes of daylight, with the sun shining for approximately 11 hours 1 minutes each day. Additionally, there is a 32% probability of sunny days during this period.

96 mm (3.8 inches)

Precipitation

13 rainy days

Rainy days

11 hours 1 minutes

Sunshine hours

32%

Chance of sun

UV Index

In September, the UV Index in Katwijk aan den Rijn reaches a maximum of 5, indicating a level of Moderate exposure. The most intense UV radiation typically occurs between 13:00 and 15:00, during which unprotected skin may burn in as little as 30 minutes.

Average solar exposure data for the current time of the year. Actual values may vary and depend on many factors, such as cloud cover, vegetation cover, surface type, etc.
  07:00 08:00 09:00 10:00 11:00 12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00
UVI 1 1 1 2 3 4 5 5 5 4 2 1 1
Exposure Low Moderate Low
Time to burn 45 min 30 min 45 min

Compare Katwijk aan den Rijn's Climate with Cities Worldwide