Climate and monthly weather forecastGeysir, Iceland

Climate and monthly weather forecast

The climate of Geysir

The Geysir region is nestled in Iceland, following the Köppen climate classification of Cfc. This characteristic signifies a marine west coast climate, distinguished by cool summers. Throughout the entirety of the year, inhabitants and tourists can observe a broad range of weather conditions, primarily emphasized by considerable amounts of rainfall and snowfall.

By perusing a variety of climate metrics, it becomes apparent that this region is home to temperate conditions that fluctuate modestly throughout the twelve months. Notably, the monthly average high temperatures range from -1.7°C (28.9°F) in January to the warmth of 11.3°C (52.3°F) in July. Correspondingly, average low temperatures vary from -7.6°C (18.3°F) in December to 5.9°C (42.6°F) in July. Adding to the weather dynamics, relative humidity stays within the limits from 78% in June to 89% in January, further influencing the overall feel of the weather.

An interesting pattern to consider is the distribution of rainfall within Geysir, which reaches a maximum in January with 141mm (5.55") and decreases to 41mm (1.61") in June. However, the number of rainy days peaks in autumn, specifically in October with 21.9 days. This distinctive pattern contrasts starkly with the snowfall, which is at its heaviest in January, accumulating 393mm (15.47") over 16.7 days but absent completely by June.

The best time to visit Geysir

Most tourists find the summer months, particularly June, to be the best time to visit Geysir. Despite the humidity subsiding to 78%, the temperature rises to pleasant levels, peaking at 9.8°C (49.6°F) and not falling below 4°C (39.2°F). This relatively warm weather is accompanied by 21 hours of daylight, ensuring ample time for outdoor activities and sightseeing. Additionally, the summer offers the lowest levels of rainfall and an absence of snowfall.

The worst time to visit Geysir

In contrast, January and February can be quite challenging due to the harsh weather conditions. Temperatures tend to hover below freezing, dropping down to -6.2°C (20.8°F) and scarcely surpassing -1.7°C (28.9°F). Snowfall is substantial during these months, peaking at 393mm (15.47") in January, providing a challenge for visitors unaccustomed to such conditions. Moreover, these months only experience approximately 5.5 to 8.6 hours of daylight with low levels of sunshine, further reducing the opportunities for outdoor activities.

Spring weather in Geysir

The conditions in Geysir during the spring months can be rather unpredictable. March experiences cold temperatures, snowfall of 378mm (14.88"), and only 11.8 hours of daylight. Nevertheless, by May, there is a noticeable change in the weather. The temperature rises to 5.5°C (41.9°F), snowfall decreases to 27mm (1.06"), and the amount of daylight increases substantially to 18.6 hours.

Summer weather in Geysir

Summer arrives in Geysir with milder temperatures and predominantly clear skies. June marks the onset of summer with temperature highs reaching up to 9.8°C (49.6°F) and low levels of rainfall at only 41mm (1.61"). As the season progresses, July offers the warmest conditions of the year, reaching an average high of 11.3°C (52.3°F). This coincides with the longest daylight hours, peaking at 21 hours in June.

Autumn weather in Geysir

Autumn entails a shift towards cooler temperatures and an increase in precipitation. September sees a decrease in daily temperatures to an average of 6.8°C (44.2°F), along with 129mm (5.08") of rainfall. By November, temperatures dip to -0.5°C (31.1°F) on average, and snowfall makes its reappearance, with an observed 161mm (6.34") of snow during this month.

Winter weather in Geysir

Winter in Geysir is a showcase of extreme weather conditions. December welcomes the winter with the coldest temperatures, averaging from -2.6°C (27.3°F) to -7.6°C (18.3°F). January sees the highest snowfall, with an average of 393mm (15.47") accumulating over 16.7 days. Despite the harsh conditions, winter also provides its own unique beauty and activities, making Geysir a magnet for winter-loving tourists.

Weather in January

January's weather in Geysir, Iceland remains decidedly chilly, reflecting its icy grip. This winter month experiences increased snowfall, with a total depth of around 393mm (15.47"). Taking a wintry walk at this time of year will require wrapping up warm, as the average high temperatures are typically around -1.7°C (28.9°F). Weather in January »

Weather in February

February marks a continuation of the winter season in Geysir. The mercury stays frigid, though not as bitter compared to January. Despite a slight increase in temperature, snowfall remains high, yet sees a decrease to 235mm (9.25"). Weather in February »

Weather in March

March signals the arrival of spring, yet winter leaves its footprints in Geysir's weather patterns. An average high temperature of -0.7°C (30.7°F) signifies a mild improvement from the previous month, however, snow lingers with 378mm (14.88") worth of snowfall. Weather in March »

Weather in April

April bridges the gap between winter and summer in Geysir. When compared to March, there's a considerable drop in average snowfall to 136mm (5.35"), highlighting the shift in seasons. Temperature also experiences an upward trend, breaking the freezing limit and averaging at a high of 2.1°C (35.8°F). Weather in April »

Weather in May

May symbolizes the shift towards the warmer months, seeing negligible snowfall of just 27mm (1.06") in Geysir. While the snow bids farewell, the longer days make outdoor activities tempting. May turns Geysir's landscapes into captivating views, with blooming flora under partly sunny skies. Weather in May »

Weather in June

June ushers in summer, a season known to alter Geysir's landscape dramatically. With no measurable snowfall, the shift in gears is vivid from the previous months. A breezy climate prevails, but it doesn’t detract from the appeal of the 21 hours of daylight that June provides. Weather in June »

Weather in July

July exemplifies the height of summer in Geysir, with temperatures reaching an average high of 11.3°C (52.3°F). The town basks in up to 19.7 hours of daylight, offering an extended window to explore and soak in the natural beauty. Weather in July »

Weather in August

August carries through the summer weather, albeit with slightly lower temperatures. An average high of 10.4°C (50.7°F) and 19 hours of daylight underscores the persistence of summer traits. Sudden rain showers amidst mild temperatures portray a typical picture of August weather in Geysir. Weather in August »

Weather in September

In September, weather starts to switch back to cooler tones in Geysir. A notable decrease in temperatures and daylight marks the arrival of autumn. Brief showers and overcast days intersperse the retained summer warmth. A snowfall quantity of 18mm (0.71") hints at the winter arriving in the not-too-distant future. Weather in September »

Weather in October

October brings a distinct autumnal chill to Geysir's air, preparing for winter’s eminent return. The weather gets colder, as the mercury dips to approximately 2.8°C (37°F) during the day. Snow begins to appear prominently on the forecast, with 53mm (2.09") on average. Weather in October »

Weather in November

November marks the transition from autumn to winter in Geysir. Temperatures continue to descend, leading to an increase in snowfall, with a recorded average of 161mm (6.34"). This rise in snowfall transforms the town into a winter wonderland. Weather in November »

Weather in December

December brings Geysir, Iceland into full winter mode. With temperatures dipping to -2.6°C (27.3°F), the cold finds its grip, nudging temperatures to the year's lowest. The significant snowfall of 259mm (10.2") blankets the town, creating stunning vistas. Weather in December »

Updated: Jul 23, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

January is the most humid month, with an average relative humidity of 89%.

January is the month with the most rainfall. Rain falls for 15 days and accumulates 141mm (5.55") of precipitation.

Throughout the year, there are 201.7 rainfall days, and 1100mm (43.31") of precipitation is accumulated.

January through May, September through December are months with snowfall.

The month with the most snowfall is January, when snow falls for 16.7 days and typically aggregates up to 393mm (15.47") of snow.

In Geysir, during the entire year, snow falls for 98.9 days and aggregates up to 1660mm (65.35") of snow.

The month with the least sunshine in Geysir is January, with an average of 2.4h of sunshine.

June is the least humid month, with an average relative humidity of 78%.

The month with the least rainfall is June, when the rain falls for 16.9 days and typically collects 41mm (1.61") of precipitation.

In Geysir, Iceland, snow does not fall in June through August.

With an average of 21h and 0min of daylight, June has the longest days of the year.

The months with the highest UV index are June and July, with an average maximum UV index of 3.

Geysir's warmest weather arrives in July, when temperatures average a high of 11.3°C (52.3°F) and a low of 5.9°C (42.6°F).

August has the most sunshine of the year, with an average of 8.2h of sunshine.

The months with the lowest UV index in Geysir are October and November, with an average maximum UV index of 1.

Geysir's December weather reaches an average high of -2.6°C (27.3°F) and an average low of -7.6°C (18.3°F), making it the coldest month.

The month with the shortest days is December, with an average of 4h and 18min of daylight.

Geysir does not observe Daylight Saving Time (DST). GMT timezone is used over the entire year.

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Long-term

Year J F M A M J J A S O N D

Average temperature
Geysir, Iceland

Average high temperature in January:
-1.7°C
Average high temperature in February:
-1.6°C
Average high temperature in March:
-0.7°C
Average high temperature in April:
2.1°C
Average high temperature in May:
5.5°C
Average high temperature in June:
9.8°C

Average high temperature in July:
11.3°C
Average high temperature in August:
10.4°C
Average high temperature in September:
6.8°C
Average high temperature in October:
2.8°C
Average high temperature in November:
-0.5°C
Average high temperature in December:
-2.6°C

The warmest month (with the highest average high temperature) is July (11.3°C).
The month with the lowest average high temperature is December (-2.6°C).

Average low temperature in January:
-6.2°C
Average low temperature in February:
-6.3°C
Average low temperature in March:
-6°C
Average low temperature in April:
-3.2°C
Average low temperature in May:
0.2°C
Average low temperature in June:
4°C

Average low temperature in July:
5.9°C
Average low temperature in August:
5°C
Average low temperature in September:
2.4°C
Average low temperature in October:
-0.9°C
Average low temperature in November:
-4.4°C
Average low temperature in December:
-7.6°C

The month with the highest average low temperature is July (5.9°C).
The coldest month (with the lowest average low temperature) is December (-7.6°C).

Average pressure
Geysir, Iceland

Average pressure in July:
1009.6mbar
Average pressure in August:
1007.9mbar
Average pressure in September:
1003.1mbar
Average pressure in October:
1004.2mbar
Average pressure in November:
1002mbar
Average pressure in December:
998.9mbar

The month with the highest atmospheric pressure is June (1013.9mbar).
The month with the lowest atmospheric pressure is January (997.4mbar).

Average wind speed
Geysir, Iceland

Average wind speed in January:
19.2km/h
Average wind speed in February:
19.9km/h
Average wind speed in March:
18.4km/h
Average wind speed in April:
17.1km/h
Average wind speed in May:
15.4km/h
Average wind speed in June:
11.8km/h

Average wind speed in July:
11.9km/h
Average wind speed in August:
12.8km/h
Average wind speed in September:
15.5km/h
Average wind speed in October:
16.9km/h
Average wind speed in November:
18km/h
Average wind speed in December:
18.7km/h

The windiest month (with the highest average wind speed) is February (19.9km/h).
The calmest month (with the lowest average wind speed) is June (11.8km/h).

Average humidity
Geysir, Iceland

The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is June (78%).

Average rainfall
Geysir, Iceland

The wettest month (with the highest rainfall) is January (141mm).
The driest month (with the least rainfall) is June (41mm).

Average rainfall days
Geysir, Iceland

Average rainfall days in January:
15 days
Average rainfall days in February:
12.2 days
Average rainfall days in March:
14.3 days
Average rainfall days in April:
17.2 days
Average rainfall days in May:
16.8 days
Average rainfall days in June:
16.9 days

Average rainfall days in July:
20.7 days
Average rainfall days in August:
19.3 days
Average rainfall days in September:
21.9 days
Average rainfall days in October:
19.4 days
Average rainfall days in November:
15.5 days
Average rainfall days in December:
12.5 days

The month with the highest number of rainy days is September (21.9 days).
The month with the least rainy days is February (12.2 days).

Average snowfall
Geysir, Iceland

The month with the highest snowfall is January (393mm).
The months with the least snowfall are June, July and August (0mm).

Average snowfall days
Geysir, Iceland

Average snowfall days in January:
16.7 days
Average snowfall days in February:
13.8 days
Average snowfall days in March:
17.2 days
Average snowfall days in April:
12.3 days
Average snowfall days in May:
4.1 days
Average snowfall days in June:
0.1 days

Average snowfall days in July:
0 days
Average snowfall days in August:
0 days
Average snowfall days in September:
1.3 days
Average snowfall days in October:
6.3 days
Average snowfall days in November:
11.6 days
Average snowfall days in December:
15.5 days

The month with the highest number of snowfall days is March (17.2 days).
The months with the least snowfall days are July and August (0 days).

Average daylight / Average sunshine
Geysir, Iceland

Average daylight in January:
5h and 30min
Average daylight in February:
8h and 36min
Average daylight in March:
11h and 48min
Average daylight in April:
15h and 12min
Average daylight in May:
18h and 36min
Average daylight in June:
21h and 0min

Average daylight in July:
19h and 42min
Average daylight in August:
16h and 24min
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 18min

The month with the longest days is June (Average daylight: 21h and 0min).
The month with the shortest days is December (Average daylight: 4h and 18min).

Average sunshine in January:
2h and 24min
Average sunshine in February:
3h and 18min
Average sunshine in March:
4h and 30min
Average sunshine in April:
5h and 42min
Average sunshine in May:
7h and 42min
Average sunshine in June:
6h and 24min

Average sunshine in July:
7h and 54min
Average sunshine in August:
8h and 12min
Average sunshine in September:
4h and 30min
Average sunshine in October:
4h and 30min
Average sunshine in November:
2h and 48min
Average sunshine in December:
2h and 42min

The month with the most sunshine is August (Average sunshine: 8h and 12min).
The month with the least sunshine is January (Average sunshine: 2h and 24min).