Hveragerði Weather in September
During September, Hveragerði experiences moderate daytime temperatures of 12°C (54°F) and cooler nights around 6°C (43°F). As the wettest month of the year, expect frequent rainfall.
Rainfall in Hveragerði in September
This month experiences the most intense rain of the year, with heavy showers. Be prepared with a poncho to stay dry. Historically, September sees about 18 days of rain, with a monthly average of 172 mm (6.8 in). This is a wet month with frequent and often heavy showers. Both the number of rain days and the total rainfall are high.
Temperature in Hveragerði in September
Daytime highs in Hveragerði in September reach 12°C (54°F), with nights around 6°C (43°F). Even when the weather is stable, mornings and evenings can still feel distinctly cool. With lows around 6°C (43°F), nights are cold. The upside is that cool, crisp nights are often the best for a deep sleep.
Sunshine in Hveragerði in September
The area experiences a moderate amount of sunshine, with approximately 121 hours of sunlight expected. This means a decent mix of sun and overcast.September in Hveragerði can still be great, but if you prefer pleasant temperatures along with dry and sunny conditions, our weather planner can help you explore other options in the world.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Iceland, check out our Hveragerði's climate page.
Hveragerði Temperature in September
Min Temperature
6°C (43°F)
Max Temperature
12°C (54°F)
Chance of Rain
60%
Precipitation
172 mm (6.8 in)
Rainy days
18 days
Humidity
79% *
Sunshine
121 hours *
Percentage Sunshine
30% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Hveragerði typically stay consistent throughout September, with daily highs averaging around 12°C (54°F). Nights are cold, with lows typically ranging from 4°C (39°F) to 8°C (46°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Hveragerði in September
Browse day-by-day weather records for Hveragerði spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Hveragerði historical weather extremes in September
Based on weather observations in Hveragerði between 1976 and 2025, these are the recorded extremes during September.
- The warmest day in September was on September 1, 2006, with a maximum of 18°C (64°F).
- On September 30, 1981, Hveragerði saw its coldest September day with temperatures maxing out at 3°C (37°F).
- Hveragerði registered its coldest September night on September 27, 1995, with temperatures dropping to -4°C (25°F).
- The heaviest September precipitation occurred on September 12, 2007, when 41 mm (1.6 in) of precipitation fell.
Best Places in Iceland in September
Find out more about the weather in Iceland and which places have the best travel conditions in this month. See all of Iceland in September →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Hveragerði in September
The weather can be unpredictable in September, so pack clothes you can easily mix and match. You could bring jeans, other long pants, and a few t-shirts. A light jacket or light sweater will be pleasant for the cooler moments. Also bring a poncho, it will rain a lot! Waterproof everything you can. Bring sunglasses since you'll have some sunny periods throughout the monthWhat To Do in Hveragerði in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Iceland, check out our Hveragerði's climate page.
Temperature Rainfall Sunshine Humidity
See the full Hveragerði climate overview or explore weather in Iceland.
