Days 1-16 are a real forecast from global weather models. Days 17-30 are season-typical values based on DWD climate normals 1991-2020 — good for planning, NOT an exact forecast that far ahead.
30 days — Hamburg
14 real + 16 synthesised
Tue · Today Clear
+31°+17°3,6 mm
Wed · Tomorrow Clear
+30°+18°7%
Thursday 6/8 Clear
+24°+14°4%
Friday 7/8 Partly cloudy
+20°+12°0,1 mm
Saturday 8/8 Clear
+25°+11°4%
Sunday 9/8 Clear
+25°+13°6%
Monday 10/8 Clear
+24°+12°7%
Tuesday 11/8 Clear
+26°+11°3%
Wednesday 12/8 Clear
+27°+13°1,0 mm
Thursday 13/8 Partly cloudy
+24°+15°9,2 mm
Friday 14/8 Partly cloudy
+21°+13°1,2 mm
Saturday 15/8 Clear
+20°+10°1,0 mm
Sunday 16/8 Clear
+25°+14°7%
Monday 17/8 Clear
+23°+13°7%
Tuesday 18/8 Showers
+22°+14°4,3 mm
Wednesday 19/8 Showers
+23°+14°1,9 mm
Thursday 20/8 Partly cloudy (climate normal)
+24°+14°20%
Friday 21/8 Rain (climate normal)
+23°+13°5,6 mm
Saturday 22/8 Partly cloudy (climate normal)
+23°+13°20%
Sunday 23/8 Partly cloudy (climate normal)
+22°+12°20%
Monday 24/8 Rain (climate normal)
+21°+12°5,3 mm
Tuesday 25/8 Partly cloudy (climate normal)
+23°+13°20%
Wednesday 26/8 Partly cloudy (climate normal)
+24°+13°20%
Thursday 27/8 Rain (climate normal)
+27°+15°5,1 mm
Friday 28/8 Partly cloudy (climate normal)
+24°+13°20%
Saturday 29/8 Partly cloudy (climate normal)
+23°+13°20%
Sunday 30/8 Rain (climate normal)
+21°+12°4,1 mm
Monday 31/8 Partly cloudy (climate normal)
+20°+11°20%
Tuesday 1/9 Partly cloudy (climate normal)
+18°+10°20%
Wednesday 2/9 Rain (climate normal)
+19°+11°6,9 mm
Long-range forecast · Hamburg
Hamburg — 30-day analysis
Across the 30-day trend for Hamburg, highs and lows span 10° to 31°, cooling down later in the month. The first 16 days are a real forecast, with rain on about 5 of them; the rest is based on the 1991–2020 climate normals.
How does the long-range forecast work?
Days 1-16 are a real forecast from global models (ICON, ECMWF, GFS): days 1-3 are almost always right, uncertainty grows afterwards, and from day 11 these are tendencies rather than exact values.
From day 17 a serious day-by-day forecast is physically impossible. We therefore show the 1991-2020 climate normals (monthly mean Tmax/Tmin) directly for Hamburg, with mild weekly variation — the typical weather for the season, not a daily prediction.
Rule of thumb: good for “how warm is it usually in late July?”, not for “will it rain on the 27th?”.