Climate and monthly weather forecastAlftanes, Iceland
Climate and monthly weather forecast
The climate of Alftanes
Nestled in southwestern Iceland, Alftanes belongs to the Cfc category according to the Köppen climate classification, enjoying a marine west coast climate with a notable cool summer. The region experiences a variety of weather changes throughout the year, marked mainly by consistent humidity levels, noticeable temperature fluctuations, and a blend of rainfall patterns.Reflecting on the average temperatures, it can be observed that the warmer months range from May to August, with highs stretching from 8.3°C (46.9°F) to 13.5°C (56.3°F). The cooler months, however, settle between December and February, as temperatures plummet to as low as -2.4°C (27.7°F) and barely exceed the freezing point at 1.8°C (35.2°F). Also, humidity remains relatively steady year-round, averaging between 75 and 82%.
With a considerable amount of cloud cover throughout the year, averaging around 65%, Alftanes gets a substantial amount of rainfall. The downpour peaks in the transitional seasons, with October recording up to 40mm (1.57") and May seeing 32mm (1.26"). However, there's noticeable drop in the summer months, such as July and August when the region receives just 25mm (0.98").
The best time to visit Alftanes
On the basis of climate parameters, June emerges as the most appealing time to visit Alftanes. The month combines a maximum temperature of 11.7°C (53.1°F), relatively low rainfall of 25mm (0.98") spread across 15.4 days, and extended daylight hours of 20.8h. In addition, it claims the highest sea temperature, 9.3°C (48.7°F), ideal for those looking to explore the aquatic environment.The worst time to visit Alftanes
Contrastingly, the stretch from December to February proves to be rather challenging for visitors due to harsh weather conditions. The temperature during this period mostly floats around the freezing point with the thermometer recording between -2.4°C (27.7°F) and 1.8°C (35.2°F). Coupled with this, the reduced daylight hours, ranging from 4.4h to 5.6h, only make the atmosphere more testing.Spring weather in Alftanes
Spring, extending from March to May, in Alftanes exhibits mild weather. The temperatures start to climb, moving from an average low of -1°C (30.2°F) to a high of 8.3°C (46.9°F) by the end of May. The rainfall appears to be evenly distributed over these months, from 40mm (1.57") in March to 32mm (1.26") in May. The daylight hours expand rapidly, providing more than 15 hours of daylight by the end of spring.Summer weather in Alftanes
Summer settles in Alftanes from June to August. Temperatures during this period are comfortably warm, peaking at 13.5°C (56.3°F) in July. The summer season tends to be drier as rainfall drops to 25mm (0.98") in June and July. Moreover, the extended daylight hours, especially in June with up to 20.8h, make it the favourite season for tourists.Autumn weather in Alftanes
The months of September to November mark the autumn season. During this time, a slow cooling trend is observed with highs dropping from 9.6°C (49.3°F) in September to 3.2°C (37.8°F) in November. Rainfall ascends significantly, reaching up to 40mm (1.57") in October. The shrinking daylight hours, reducing to 6.5h in November, mark the transition towards the cold winter.Winter weather in Alftanes
Winter in Alftanes sets in from December to February and is symbolised by freezing temperatures, intense winds, and a significant amount of snowfall. The lowest temperature is observed in December, plummeting to -2.4°C (27.7°F). Snowfall peaks at 100mm (3.94") in February, leading to challenging conditions. Despite the extreme winter, Alftanes becomes a spectacle of pure white, making it an intriguing sight for adventurous travellers.Weather in January
Alftanes, Iceland experiences the lowest temperatures of the year in January. The chilliest conditions can be seen between the lowest average temperature of -1.4°C (29.5°F) and the highest average temperature of 1.7°C (35.1°F). Weather in January »Weather in February
Transitioning from January's peak winter to milder weather in February, the freezing conditions ease up. February weather has a minimal increment with a lowest of -1.3°C (29.7°F) and highest of 1.8°C (35.2°F); however, the drop in snowfall compared to the last month is relatively significant. Weather in February »Weather in March
The weather in March brings subtle changes, significantly differentiating it from what February served. The marked feature this month is the high snowfall reaching up to 100mm (3.94"). The dwindling snowfall days from February transform into longer daylight hours, turning the icy scenery into a playground for outdoor activities. Weather in March »Weather in April
The weather in April witnesses a momentous shift from icy to wet conditions in Alftanes, Iceland. A remarkable rise in the temperature from 2.3°C (36.1°F) to 4.9°C (40.8°F) hints at the arrival of spring. The once snow-rich landscapes begin to fade into wet terrains due to the diminishing snowfall, replaced by more rainfall. Weather in April »Weather in May
May introduces the early signs of summer in Alftanes, Iceland. The temperature averages from 4.1°C (39.4°F) to 8.3°C (46.9°F), which, contrary to the previous cool weather, suggests a warmer climate. The absence of snowfall contributes to the thawing of the ground, encouraging the bloom of summer vegetation. Weather in May »Weather in June
June is the gateway to summer in Alftanes, Iceland with temperature ranging from 7.4°C (45.3°F) to 11.7°C (53.1°F). This month is a haven for sun-seekers with higher sea temperatures and the year's longest daylight hours. The frequent drizzle and sweeping winds give way to clear days embracing warmth and less gusty winds. Weather in June »Weather in July
July is characterized as the warmest month of the year, hosting a temperature spectrum from 9.1°C (48.4°F) to 13.5°C (56.3°F). With the highest UV index of the year, the summer divine touches down in Alftanes, Iceland. The combination of scarce rainfall and plush greenery provides great weather for outdoor activities. Weather in July »Weather in August
The weather in August sees a minor regression compared to July. The average temperature fall from 13.5°C (56.3°F) to 12.8°C (55°F), signifying the beginning of the retreat of summer. The long daylight hours slowly recede, hinting at the incoming transition to autumn. Weather in August »Weather in September
September brings a gradual change in the weather in Alftanes, Iceland from the cheery summer to mild autumn. With the average low temperature falling to 6.2°C (43.2°F), cool breezes start to sweep across the city. A rise in rainfall contributes to the onset of autumn's charade of hues. Weather in September »Weather in October
The weather in October signifies a shift from mild autumn to early winters in Alftanes, Iceland. The temperature ranges from an average high of 6.2°C (43.2°F) to a low of 3.2°C (37.8°F), indicating an incremental dip. A drizzly condition fills the air with a distinct crispness, giving the city its unique autumnal appeal. Weather in October »Weather in November
November sees the advent of winter with temperatures falling between 0.5°C (32.9°F) and 3.2°C (37.8°F). As the winter chill sets in, Alftanes, Iceland starts receiving intermittent snowfall, marking the onset of the festive season. Weather in November »Weather in December
Alftanes, Iceland enters peak winter in December, with enveloping temperatures between -2.4°C (27.7°F) and 1.3°C (34.3°F). A marked feature of this month's weather is the high snowfall reaching a peak of 61mm (2.4"). The snowy environment coupled with festive lights provides a charming winter wonderland effect. Weather in December »Updated: Feb 10, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
The months with the highest humidity in Alftanes, Iceland, are January, February and September, with an average relative humidity of 82%.
January is the month with the most rainfall in Alftanes, Iceland. Rain falls for 12.8 days and accumulates 47mm (1.85") of precipitation.
In Alftanes, Iceland, during the entire year, the rain falls for 166.2 days and collects up to 416mm (16.38") of precipitation.
January through May, October through December are months with snowfall in Alftanes.
In Alftanes, Iceland, during the entire year, snow falls for 41.1 days and aggregates up to 309mm (12.17") of snow.
January has the least sunshine of the year in Alftanes, with an average of 2.4h of sunshine.
The months with the lowest UV index in Alftanes are January, February and November, with an average maximum UV index of 1.
The month with the most snowfall in Alftanes, Iceland, is March, when snow falls for 9.4 days and typically aggregates up to 100mm (3.94") of snow.
March is the month with the coldest seawater, with an average sea temperature of 4.3°C (39.7°F).
May is the least humid month, with an average relative humidity of 75%.
June and July are months with the least rain in Alftanes, Iceland, when the rain falls for 15.4 days and typically aggregates up to 25mm (0.98") of rain.
June through September are months without snowfall.
With an average of 20h and 48min of daylight, June has the longest days of the year in Alftanes, Iceland.
Alftanes's warmest month, July, generally records average temperatures ranging from a high of 13.5°C (56.3°F) to a low of 9.1°C (48.4°F).
July and August, with an average sea temperature of 11.3°C (52.3°F), are months with the warmest seawater in Alftanes.
With an average maximum UV index of 4, July is the month with the highest UV index.
August has the most sunshine of the year, with an average of 7.4h of sunshine.
In Alftanes, the average lowest temperatures are observed in December, with a high of 1.3°C (34.3°F) and a low of -2.4°C (27.7°F).
With an average of 4h and 24min of daylight, December has the shortest days of the year in Alftanes.
Alftanes does not utilize Daylight Saving Time (DST). GMT timezone is used throughout the entire year.
Average temperature
Alftanes, Iceland
The warmest month (with the highest average high temperature) is July (13.5°C).
The month with the lowest average high temperature is December (1.3°C).
The month with the highest average low temperature is July (9.1°C).
The coldest month (with the lowest average low temperature) is December (-2.4°C).
Average pressure
Alftanes, Iceland
- Average pressure in January:
996.6mbar - Average pressure in February:
997.8mbar - Average pressure in March:
1003.5mbar - Average pressure in April:
1008.9mbar - Average pressure in May:
1012.1mbar - Average pressure in June:
1013.8mbar
- Average pressure in July:
1009.5mbar - Average pressure in August:
1007.7mbar - Average pressure in September:
1002.9mbar - Average pressure in October:
1003.6mbar - Average pressure in November:
1001.4mbar - Average pressure in December:
998.4mbar
The month with the highest atmospheric pressure is June (1013.8mbar).
The month with the lowest atmospheric pressure is January (996.6mbar).
Average wind speed
Alftanes, Iceland
- Average wind speed in January:
24.5km/h - Average wind speed in February:
24.9km/h - Average wind speed in March:
23.4km/h - Average wind speed in April:
22.1km/h - Average wind speed in May:
19.1km/h - Average wind speed in June:
14.9km/h
- Average wind speed in July:
14.9km/h - Average wind speed in August:
16km/h - Average wind speed in September:
20.4km/h - Average wind speed in October:
21.5km/h - Average wind speed in November:
22.6km/h - Average wind speed in December:
23.6km/h
The windiest month (with the highest average wind speed) is February (24.9km/h).
The calmest months (with the lowest average wind speed) are June and July (14.9km/h).
Average humidity
Alftanes, Iceland
The months with the highest relative humidity are January, February and September (82%).
The month with the lowest relative humidity is May (75%).
Average rainfall
Alftanes, Iceland
The wettest month (with the highest rainfall) is January (47mm).
The driest months (with the least rainfall) are June and July (25mm).
Average rainfall days
Alftanes, Iceland
- Average rainfall days in January:
12.8 days - Average rainfall days in February:
10.5 days - Average rainfall days in March:
11 days - Average rainfall days in April:
15 days - Average rainfall days in May:
15.5 days - Average rainfall days in June:
15.4 days
- Average rainfall days in July:
17.4 days - Average rainfall days in August:
14.8 days - Average rainfall days in September:
17.8 days - Average rainfall days in October:
14.3 days - Average rainfall days in November:
12 days - Average rainfall days in December:
9.7 days
The month with the highest number of rainy days is September (17.8 days).
The month with the least rainy days is December (9.7 days).
Average snowfall
Alftanes, Iceland
The month with the highest snowfall is March (100mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days
Alftanes, Iceland
- Average snowfall days in January:
7.4 days - Average snowfall days in February:
6.8 days - Average snowfall days in March:
9.4 days - Average snowfall days in April:
5.5 days - Average snowfall days in May:
1.2 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0.6 days - Average snowfall days in November:
3.9 days - Average snowfall days in December:
6.3 days
The month with the highest number of snowfall days is March (9.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature
Alftanes, Iceland
The best months for swimming (with the highest average sea temperature) are July and August (11.3°C).
The coldest month (with the lowest average sea temperature) is March (4.3°C).
Average daylight / Average sunshine
Alftanes, Iceland
- Average daylight in January:
5h and 36min - Average daylight in February:
8h and 36min - Average daylight in March:
11h and 48min - Average daylight in April:
15h and 6min - Average daylight in May:
18h and 30min - Average daylight in June:
20h and 48min
- Average daylight in July:
19h and 30min - Average daylight in August:
16h and 18min - Average daylight in September:
13h and 0min - Average daylight in October:
9h and 42min - Average daylight in November:
6h and 30min - Average daylight in December:
4h and 24min
The month with the longest days is June (Average daylight: 20h and 48min).
The month with the shortest days is December (Average daylight: 4h and 24min).
- Average sunshine in January:
2h and 24min - Average sunshine in February:
3h and 12min - Average sunshine in March:
4h and 12min - Average sunshine in April:
5h and 12min - Average sunshine in May:
7h and 0min - Average sunshine in June:
4h and 6min
- Average sunshine in July:
6h and 54min - Average sunshine in August:
7h and 24min - Average sunshine in September:
4h and 30min - Average sunshine in October:
4h and 12min - Average sunshine in November:
2h and 42min - Average sunshine in December:
2h and 54min
The month with the most sunshine is August (Average sunshine: 7h and 24min).
The month with the least sunshine is January (Average sunshine: 2h and 24min).
Average sunshine days
Alftanes, Iceland
- Average sunshine days in January:
11.3 days - Average sunshine days in February:
11.9 days - Average sunshine days in March:
10.9 days - Average sunshine days in April:
10.3 days - Average sunshine days in May:
10.4 days - Average sunshine days in June:
10.1 days
- Average sunshine days in July:
9.2 days - Average sunshine days in August:
12.8 days - Average sunshine days in September:
8.8 days - Average sunshine days in October:
13.3 days - Average sunshine days in November:
13.5 days - Average sunshine days in December:
14.1 days
The month with the most sunshine days is December (14.1 days).
The month with the least sunshine days is September (8.8 days).
Average UV index
Alftanes, Iceland
The month with the highest UV index is July (UV index 4).
The months with the lowest UV index are January, February and November (UV index 1).
Average cloud cover
Alftanes, Iceland
The months with the most cloud cover are March and April (Cloud cover 68).
The months with the least cloud cover are August and December (Cloud cover 60).
Average visibility
Alftanes, Iceland
The month with the highest visibility is June (10km).
The months with the lowest visibility are January, February, March, April, May, July, August, September, October, November and December (9km).
