Dalvík Weather in September
September in Dalvík averages 9°C (48°F) during the day and 4°C (39°F) at night. Quite a bit of rainfall is typical this month, with around 145 mm (5.7 in) on average. An umbrella is a good idea.
Rainfall in Dalvík in September
On average, there are about 16 days with rain during this month, averaging 145 mm (5.7 in). Expect frequent rainfall this month, and not just light drizzle. When it rains, it tends to come down hard.
Temperature in Dalvík in September
Dalvík in September gets highs of 9°C (48°F) during the day and drops to 4°C (39°F) at night. Even at the warmest part of the day, temperatures stay low. Dressing warmly from the start is the sensible approach. At 4°C (39°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions.
Sunshine in Dalvík in September
This month sees fewer sunny days, with about 85 hours of sunshine, perfect for those who enjoy cooler temperatures.September in Dalvík has its charm, but if you're looking for destinations with pleasant temperatures and sunny skies, 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 Dalvík's climate page.
Dalvík Temperature in September
Min Temperature
4°C (39°F)
Max Temperature
9°C (48°F)
Chance of Rain
53%
Precipitation
145 mm (5.7 in)
Rainy days
16 days
Humidity
77% *
Sunshine
85 hours *
Percentage Sunshine
20% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Dalvík typically drop from around 12°C (54°F) at the start of September to approximately 8°C (46°F) by the end. Nights are cold, with lows typically ranging from 1°C (34°F) to 6°C (43°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 Dalvík in September
Browse day-by-day weather records for Dalvík spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Dalvík historical weather extremes in September
Based on 49 years of weather observations in Dalvík between 1976 and 2025, these are the recorded extremes.
- Dalvík recorded its highest September temperature of 23°C (73°F) on September 4, 2010.
- On September 29, 1988, Dalvík saw its coldest September day with temperatures maxing out at 1°C (34°F).
- The coldest night in September in Dalvík was on September 11, 1978, with a minimum of -8°C (18°F).
- The wettest September day on record brought 92 mm (3.6 in) of precipitation to Dalvík (September 22, 1984).
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 Dalvík in September
We recommend to layer up for chilly conditions in Dalvík in September. You could start with thermal underwear or a good base layer to keep your core warm on the cooler days this month. Maybe also add a sweater or fleece, and top it off with a windproof jacket. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. You can probably leave your sunglasses at home, because sunny days are pretty rare this month.What To Do in Dalvík 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 Dalvík's climate page.
Temperature Rainfall Sunshine Humidity
See the full Dalvík climate overview or explore weather in Iceland.
