With a population of around 5,900, Katwijk aan den Rijn sits in South Holland, Netherlands. The city operates in the Central European time zone.
In 2025, Katwijk aan den Rijn recorded an average annual temperature of 53°F. The hottest temperatures reached 95°F in July; the coolest were 24°F in March. Total precipitation for the year was 32 inches, with the wettest month being October. Snowfall for the year totaled approximately 4 inches.
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