Zagreb in September
In September, Zagreb averages 22°C (72°F) during the day and 13°C (55°F) at night, with frequent rain — about 15 days of the month see precipitation (102 mm total).
High seasonConditions are comfortable for sightseeing without being sweltering. Plan for unsettled weather and bring rain gear.
September offers comfortable temperatures in Zagreb, with some rain to plan around.
How September compares to the rest of the year in Zagreb
September is in the middle of the year for warmth in Zagreb (4th of 12) and moderately rainy compared to the rest of the year (7th of 12). Daytime temperature runs 5°C above the annual average (17°C). September runs 5°C cooler than August (27°C) and cools 5°C in October (17°C).
September sunrise & sunset in Zagreb
Times shown for Zagreb local time (Europe/Zagreb), calculated for the 15th of September. They shift by a few minutes day to day across the month.
Photography light in Zagreb — September
Golden-hour and blue-hour windows for the 15th of September, in Zagreb's local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — Zagreb in September
Travel writers usually only tell you when to go. Here's when to book flights and lodging for the best mix of price and availability, based on September's tier (High season) and Zagreb's popularity.
Crowds & pricing — September in Zagreb
This is a busy month in Zagreb — not the absolute peak, but tourist numbers are clearly elevated. You'll feel it at headline attractions on weekends and in the historic centre, though side streets and lesser-known sights stay manageable. Prices are above off-season but not at their summit. A good week for first-time visitors who want everything open without the worst of the crush.
Why this tier: excellent tourism weather
Sun & mosquito risk — September in Zagreb
UV is a clear-sky sea-level estimate — clouds, altitude, and reflective surfaces (snow, water) shift it ±30%. Mosquito risk is climate-derived only; for current disease advisories (dengue, malaria, zika) check the CDC or WHO travel pages before your trip.
Zagreb in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 6°C / 42°F | -2°C / 29°F | 64 mm | 17 | — |
| February | 9°C / 47°F | 0°C / 32°F | 75 mm | 14 | — |
| March | 13°C / 55°F | 2°C / 36°F | 47 mm | 14 | — |
| April | 17°C / 62°F | 6°C / 44°F | 69 mm | 16 | — |
| May | 21°C / 69°F | 11°C / 52°F | 113 mm | 23 | — |
| June | 26°C / 79°F | 16°C / 61°F | 81 mm | 17 | — |
| July | 28°C / 82°F | 18°C / 64°F | 86 mm | 17 | — |
| August | 27°C / 81°F | 17°C / 63°F | 80 mm | 15 | — |
| September | 22°C / 72°F | 13°C / 55°F | 102 mm | 15 | — |
| October | 17°C / 63°F | 9°C / 47°F | 89 mm | 12 | — |
| November | 11°C / 51°F | 4°C / 39°F | 86 mm | 15 | — |
| December | 6°C / 44°F | 0°C / 32°F | 64 mm | 13 | — |
Other cities with similar September weather
🌍 See the full ranked list of climate twins for Zagreb in September →
Frequently asked questions
How hot is Zagreb in September?
In September, Zagreb averages a high of 22°C (72°F) and a low of 13°C (55°F) — generally mild and pleasant.
Does it rain a lot in Zagreb in September?
September is quite rainy in Zagreb, with about 15 rainy days on average.
Is September a good time to visit Zagreb?
September is mild and pleasant but on the rainy side. It suits travelers who are comfortable with mild and pleasant weather; check the month-by-month ranking to compare it against the rest of the year.
What should I pack for Zagreb in September?
Pack light layers for warm days and cooler evenings, plus a compact umbrella or rain jacket. See the full September packing list for Zagreb for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.