Comfortable for swimming. Now +21°.
Bite in Haarlem today — moderate 🎣
Pressure is jumping, water +21° — most active: horse mackerel and mackerel. Forecast by fish species and for the week ahead.
Bite forecast →
Haarlem
4/10
🐟 horse mackerel · mackerel · Pogoda 1
Water bodies in Haarlem 🌊
Map of water bodies in Haarlem
ColderWarmerpoint → water body page
Water temperature in Haarlem for a month
There is no exact monthly water forecast — the reference is the climate normal: in summer the water warms to about +16°. The monthly normal is below.
Monthly water temperature in Haarlem 🗓️
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| +4 | +5 | +5 | +7 | +11 | +15 | +16 | +16 | +16 | +12 | +8 | +6 |
Climate normal (model estimate).
Water temperature archive in Haarlem on this day
| Year | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
|---|---|---|---|---|---|---|---|---|---|---|
| Water | +24° | +25° | +26° | +25° | +24° | +24° | +24° | +25° | +25° | +26° |
Climate normal (model estimate for this date), not a measurement archive.
Where else to swim nearby 🏝️
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FAQ about water in Haarlem ❓
What is the water temperature in Haarlem now?
Now +21° — Comfortable for swimming.
When is the water in Haarlem warmest?
Warmest in July — up to +16°.
What bodies of water are there in Haarlem?
North Sea.
Water temperature in Haarlem — in detail
A summary page of water temperature across all bodies of water in Haarlem: North Sea. Now about +21°. For seas the temperature is measured SST; for rivers and lakes it is a climate estimate.