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Buna Weather in September
September in Buna sees daytime temperatures around 25°C (77°F) and lows of 12°C (54°F) at night. With around 137 mm (5.4 in) of rainfall expected, it's worth packing a rain jacket.
Rainfall in Buna in September
Typically around 9 days of rainfall are expected, averaging 137 mm (5.4 in) for the month. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.
Temperature in Buna in September
If you're visiting Buna in September, expect highs of 25°C (77°F) and overnight lows around 12°C (54°F). The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. Nights drop to around 12°C (54°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.
Sunshine in Buna in September
Enjoy a sunny month with about 226 hours of sunshine, the clear skies make Buna even more beautiful.If your ideal day consists of dry skies and pleasant temperatures, June typically offers the best circumstances for Buna.
Buna Temperature in September
Min Temperature
12°C (54°F)
Max Temperature
25°C (77°F)
Chance of Rain
31%
Precipitation
137 mm (5.4 in)
Rainy days
9 days
Humidity
61% *
Sunshine
226 hours *
Percentage Sunshine
*
* Data from: Mostar, Bosnia and Herzegovina (10 KM, 6 Miles).
Buna Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Buna - and find the best time to visit.
Daily Historical Temperatures
49-year average (1976-2025)
Based on our historical records, temperatures in Buna typically drop from around 28°C (82°F) at the start of September to approximately 24°C (75°F) by the end. Nights are cool, with lows typically ranging from 10°C (50°F) to 14°C (57°F).
Average temperatures in September
Daily Historical Precipitation
49-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather records for Buna in September
Browse day-by-day weather records for Buna spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Buna historical weather extremes in September
Based on 31 years of weather observations in Buna between 1995 and 2026, these are the recorded extremes.
- The warmest day in September was on September 3, 2026, with a maximum of 38°C (100°F).
- The coldest night in September in Buna was on September 6, 2000, with a minimum of -2°C (28°F).
Best Places in Bosnia and Herzegovina in September
Find out more about the weather in Bosnia and Herzegovina and which places have the best travel conditions in this month. See all of Bosnia and Herzegovina in September →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Buna in September
For Buna in September, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.
What To Do in Buna in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming9/10 -
Cycling9/10 -
Walking9/10 -
Camping6/10 -
Outdoor sports9/10
Buna 3-Day Forecast
More climate data for Buna
Temperature Rainfall Sunshine Humidity
See the full Buna climate overview or explore weather in Bosnia and Herzegovina.
Popular in September
Where to go in September - average daytime high across popular destinations.
Neum
26°C (79°F) Međugorje26°C (79°F) Banja Luka
23°C (73°F) Trebinje23°C (73°F) Mostar24°C (75°F) Visoko22°C (72°F) Jahorina20°C (68°F) Sarajevo21°C (70°F) Bucket list
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