Water and sea temperature in Haarlem (23rd September 2020)
The average ocean temperature for Haarlem today is 18°C
Average water/sea temperatures this week for Haarlem
What wetsuit thickness is needed for Haarlem?
The water temperature in Haarlem is a bit cool. Consider wearing a 2 mm to 3/2 mm springsuit or full wetsuit with a flatlock seam particularly if you plan to be swimming in the sea for extended periods of time.
Please note: These are general guidelines based on today's average water temperature of 18°C in Haarlem. If there are strong winds, cold air temperatures, you are engaging in activities with less movement or you get cold easily, you may want to consider a thicker wetsuit. consider a thicker wetsuit.
Information about our water / sea temperature data for Haarlem
Our measurements for the water temperature in Haarlem, Gemeente Haarlem, Netherlands are provided by the daily sea surface temperature (SST) satellite readings from NOAA.
Please be aware that our water temperatures are based on open water averages. Actual sea surface water temperatures close to the shore at Haarlem can vary by several degrees.
Weather patterns that can increase variation in water temperatures
Heavy rains, locations near river mouths and long periods of strong offshore winds can cause variations in ocean temperatures. Offshore winds cause the colder deep water to replace the surface water which has been warmed by the sun.
Whilst sea temperatures for Haarlem are as accurate as current data allows, there may be slight local and regional variations depending on conditions and variations in sea depth.