UV Index
UV Index
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Today's UV index in Rotterdam, Netherlands 
will be up to 4.1, indicating a moderate level of sun exposure for the average person. Check the annual sun radiation in the city and our tips for today to make sure you're safe in the sun.
With a UV index reaching up to 4.1 in Rotterdam, stay shaded during midday when the sun is strongest; wear protective clothing, a wide-brimmed hat, UV-blocking sunglasses; apply SPF 30+ sunscreen every 2 hours, even on cloudy days; and be cautious of heightened UV on bright surfaces.
The UV index in Rotterdam typically ranges from 1 to 8. In the summer, it can reach up to 8, while in the winter, it rarely goes above 1.
Rotterdam experiences four distinct seasons, each with unique weather patterns. Spring (March to May) is mild and wet, summer (June to August) is warm and dry, autumn (September to November) is cool and windy, and winter (December to February) is cold and often snowy.
Compared to its region and neighboring countries, Rotterdam's weather is relatively mild. It is located in the southwest of the Netherlands, which is one of the mildest areas in the country. Despite its northern location, Rotterdam's weather is warmer than that of many cities in neighboring countries such as Germany and Belgium, due to the moderating influence of the North Sea.
The chart below displays the average Shortwave Radiation Sum (MJ/m²) for each month of the last year in Rotterdam. It's designed to provide you with a better understanding of the yearly weather and sun exposure.