Climate and monthly weather forecastAmherst, Guernsey
Climate and monthly weather forecast
The climate of Amherst
Amherst, located in Guernsey, experiences a Marine west coast climate, as per the Köppen climate classification. This climate type is designated as Cfb, signifying a climate with warm summers. Geographically, Amherst aligns with a climate model that is humid and temperate, seasoned with rainfall throughout the year.The climate in Amherst, on the whole, is known for its moderate temperatures and relatively high humidity. The average high temperature fluctuates from 9.2°C (48.6°F) in February to 17.8°C (64°F) in August, showcasing a moderate temperature range throughout the year. The cold season is not severe, with the lowest average temperature dipping down to 7°C (44.6°F) in February. The warm season, in contrast, notices a moderate increase in temperature with the highest average temperature rising to 15.8°C (60.4°F) in August.
Humidity, another critical climatological parameter, stays considerably high year-round, starting from 77% in November and December and peaking at 84% in June and July. The consistency in humidity is congruent with the marine climate type in Amherst.
Precipitation in Amherst manifests mostly as rainfall, with the maximum average rainfall of 87mm (3.43") occurring in November. The number of rainfall days also peaks in November with approx. 22.8 days. Interestingly, the months from May to September witness a decrease in rainfall, suggesting a slightly drier season. As for snowfall, it is non-existent in Amherst, with 0mm (0") recorded throughout the year.
The UV index increases moderately during the warm season, reaching a maximum UV index of 5 from July to September. Cloud cover is least in July, with average cloud cover being 37%. Lastly, wind speed and direction are moderately variable, with an evident increase during the colder months.
The best time to visit Amherst
Considering weather conditions and climatic parameters, the best time to visit Amherst would be between May and September. During this period, Amherst experiences relatively moderate temperatures, varying from 12.8°C (55°F) to 17.8°C (64°F). The number of daylight hours peak in June, offering up to 16.2 hours of daylight. This season also witnesses a decrease in rain with a minimum of 26mm (1.02") of rainfall in July, making outdoor activities more enjoyable. Concurrently, the UV index remains at a moderate 4 to 5, facilitating sight-seeing and exploration without excessive risk of sunburn.The worst time to visit Amherst
Although Amherst is hospitable to visitors year-round, November and December could be considered more challenging months for travelling due to weather conditions. The rainfall increases significantly during these months, reaching a maximum of 87mm (3.43") in November and 70mm (2.76") in December. This is coupled with a rising number of rainfall days, peaking at 22.8 days in November. Additionally, daylight hours decrease drastically during these months, bottoming out at 9.1 hours and 8.3 hours in November and December respectively.Spring weather in Amherst
Spring in Amherst, represented by the months from March to May, offers a beautiful combination of pleasant temperatures and scenic beauty. When it comes to temperature, average highs fluctuate from 9.8°C (49.6°F) in March to 12.8°C (55°F) in May, indicating a gradual rise in temperature. Similarly, the average lows have an upward trend from 7.4°C (45.3°F) to 10.6°C (51.1°F) within the same period. Rainfall decreases during this season, falling to 32mm (1.26") in April. Moreover, daylight hours increase significantly, from 11.9 hours to 15.4 hours, enhancing the overall appeal of Amherst in spring.Summer weather in Amherst
Summer season in Amherst, encompassing the months from June to August, offers the warmest conditions of the year. Notably, the average temperature in these months varies from 15.2°C (59.4°F) to 17.8°C (64°F) while the lowest temperature ranges from 13.2°C (55.8°F) to 15.8°C (60.4°F) showcasing the mild nature of the Guernsey summer. Rainfall is at its minimum in summer and daylight hours peak at 16.2 in June making summer an appealing season in Amherst. UV index hits a high of 5 indicating a need for adequate sun protection during outdoor activities.Autumn weather in Amherst
Autumn in Amherst, characterised by the months of September to November, signals the descent of temperature from 17.2°C (63°F) to 13°C (55.4°F). Rainfall starts to increment and peaks at 87mm (3.43") in November, accompanied by a maximum number of rainfall days of 22.8 days. Daylight hours significantly decrease during this period, signaling shorter days and longer evenings. Despite the weather changes, autumn remains appreciated for its unique aesthetic appeal.Winter weather in Amherst
Winter in Amherst, commencing from December to February presents the coldest conditions of the year. The average high temperature ranges from 9.8°C (49.6°F) in December to 9.2°C (48.6°F) in February with average lows of 9.2°C (48.6°F) to 7°C (44.6°F) respectively. Despite the drop in temperature, conditions remain fairly moderate. Rainfall maintains a high average of 70mm (2.76") in December and reduces to 51mm (2.01") in February. However, snowfall remains non-existent, promising a winter devoid of extreme conditions. Winter months have the shortest daylight hours, with the least being 8.3 hours in December. The UV index minimizes to 3, signaling lesser ultraviolet radiation levels during this season.Weather in January
The climate in Amherst, Guernsey, transitions from the freezing grips of winter into the start of a fresh year in January. Weather in this month holds onto its winter characteristics. High winds remain consistent, gusting at speeds of 47.7km/h (29.6mph), considerably setting the stage for the rest of the year. Weather in January »Weather in February
As the calendar turns to February, the weather in Amherst, Guernsey doesn't realise considerable changes. The influence of winter persists. Drastic changes in weather conditions aren’t witnessed, reinforcing the consistency with January's weather. Weather in February »Weather in March
The weather in March signifies the arrival of spring in Amherst, Guernsey. A gradual warmth creeps into the day as winter starts losing its grip. Notable changes occur, with wind gust speed decreasing from 47.7km/h (29.6mph) in February to 44.4km/h (27.6mph). Weather in March »Weather in April
During April, the weather in Amherst, Guernsey experiences notable change. A sigh of relief welcomes the season from the harsh clutches of winter as temperatures continue to ascend. The landscape greens, indicating a more pleasant transition in weather conditions. Weather in April »Weather in May
In May, the weather in Amherst, Guernsey turns passionate. The presence of winter is a distant memory now as the weather becomes unpredictable and diverse. The month experiences a continuation of the favourable conditions that started in April. Weather in May »Weather in June
June is a parade of ample sunlight and warmth in Amherst, Guernsey. It witnesses a compelling transition towards summer, marked by long days and a boost in temperature. The shift in the weather paradigm is significant and noticeable. Weather in June »Weather in July
As mid-year arrives, the weather in Amherst, Guernsey is at its peak summer phase in July. The town is simmering with warmth, and daylight is plentiful. The pleasantly warm temperatures lure many to outdoor arrangements and festivities. Weather in July »Weather in August
In August, Amherst, Guernsey experiences the summer crown in its full glory. Sustaining the steady warmth of July, it shares the zenith of summer. A subtle change in weather dynamics marks the differences, exemplified by a slight increase in wind gust speed to 34.3km/h (21.3mph). Weather in August »Weather in September
September welcomes autumn to Amherst, Guernsey. A slow and steady transition from simmering summer to cool autumn gradually paints the skies. As the month proceeds, the early nips of autumn are felt in the air. There's a stark rise in wind gust speed to 37.6km/h (23.4mph), indicating that winter isn't as far as it seems. Weather in September »Weather in October
As October arrives in Amherst, Guernsey, shades of autumn get deeper. Autumn claims its reign over the city, and the aura turns mystical and charming. A significant leap is noticeable in the wind gust speed from 37.6km/h (23.4mph) to 41.5km/h (25.8mph). Weather in October »Weather in November
The weather in November in Amherst, Guernsey prepares for winter. Autumn is on the verge of concluding, leaving behind its vivid hues. A drastic shift in the wind conditions is observed, marking the dominance of incoming winter. Weather in November »Weather in December
By the time December reaches Amherst, Guernsey, winter has firmly set its foot. The city is gripped by the chilly winter air, and daylight becomes a precious commodity. The noticeable drop in temperature and reduced sunlight force people to seek the comfort of indoor warmth. Weather in December »Updated: Feb 9, 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
Throughout the year, in Amherst, Guernsey, there are 196.3 rainfall days, and 557mm (21.93") of precipitation is accumulated.
The only month with snowfall in Amherst, Guernsey, is January.
The month with the most snowfall is January, when snow falls for 0.3 days and typically aggregates up to 2mm (0.08") of snow.
Throughout the year, in Amherst, Guernsey, there are 0.5 snowfall days, and 2mm (0.08") of snow is accumulated.
The months with the least sunshine in Amherst are January, November and December, with an average of 3.9h of sunshine.
Temperature readings reach their annual highs in February, averaging 9.2°C (48.6°F) and a minimum average of 7°C (44.6°F).
February through December are months without snowfall.
February is the month with the lowest UV index in Amherst, Guernsey, with an average maximum UV index of 2.
June and July, with an average relative humidity of 84%, are most humid months in Amherst, Guernsey.
With an average of 16h and 12min of daylight, June has the longest days of the year.
July is the month with the least rainfall in Amherst. Rain falls for 12.8 days and accumulates 26mm (1.02") of precipitation.
The month with the most sunshine in Amherst, Guernsey, is July, with an average of 9.7h of sunshine.
The months with the highest UV index are July through September, with an average maximum UV index of 5.
August, characterized by an average high temperature of 17.8°C (64°F) and a low temperature of 15.8°C (60.4°F), is generally the warmest month.
On Sunday, 27. October 2024, at 02:00, Daylight Saving Time ends in Amherst, and the time zone changes from BST to GMT. The next Daylight Saving Time starts on Sunday, 30. March 2025, at 01:00, and the time zone reverts from GMT to BST.
November and December, with an average relative humidity of 77%, are the least humid months.
The month with the most rainfall is November, when the rain falls for 22.8 days and typically aggregates up to 87mm (3.43") of precipitation.
With an average of 8h and 12min of daylight, December has the shortest days of the year.
Average temperature
Amherst, Guernsey
The warmest month (with the highest average high temperature) is August (17.8°C).
The month with the lowest average high temperature is February (9.2°C).
The month with the highest average low temperature is August (15.8°C).
The coldest month (with the lowest average low temperature) is February (7°C).
Average pressure
Amherst, Guernsey
- Average pressure in January:
1016.1mbar - Average pressure in February:
1015.2mbar - Average pressure in March:
1016.2mbar - Average pressure in April:
1015.6mbar - Average pressure in May:
1017.4mbar - Average pressure in June:
1016.9mbar
- Average pressure in July:
1016.7mbar - Average pressure in August:
1016.4mbar - Average pressure in September:
1017.9mbar - Average pressure in October:
1015.7mbar - Average pressure in November:
1011.5mbar - Average pressure in December:
1016.5mbar
The month with the highest atmospheric pressure is September (1017.9mbar).
The month with the lowest atmospheric pressure is November (1011.5mbar).
Average wind speed
Amherst, Guernsey
- Average wind speed in January:
34.1km/h - Average wind speed in February:
34km/h - Average wind speed in March:
30.3km/h - Average wind speed in April:
25km/h - Average wind speed in May:
23.7km/h - Average wind speed in June:
22.8km/h
- Average wind speed in July:
21.9km/h - Average wind speed in August:
22.8km/h - Average wind speed in September:
25.8km/h - Average wind speed in October:
29.1km/h - Average wind speed in November:
34.8km/h - Average wind speed in December:
36km/h
The windiest month (with the highest average wind speed) is December (36km/h).
The calmest month (with the lowest average wind speed) is July (21.9km/h).
Average humidity
Amherst, Guernsey
The months with the highest relative humidity are June and July (84%).
The months with the lowest relative humidity are November and December (77%).
Average rainfall
Amherst, Guernsey
The wettest month (with the highest rainfall) is November (87mm).
The driest month (with the least rainfall) is July (26mm).
Average rainfall days
Amherst, Guernsey
- Average rainfall days in January:
22 days - Average rainfall days in February:
17.7 days - Average rainfall days in March:
17 days - Average rainfall days in April:
13.3 days - Average rainfall days in May:
11.8 days - Average rainfall days in June:
11.5 days
- Average rainfall days in July:
12.8 days - Average rainfall days in August:
14 days - Average rainfall days in September:
13.5 days - Average rainfall days in October:
18.5 days - Average rainfall days in November:
22.8 days - Average rainfall days in December:
21.4 days
The month with the highest number of rainy days is November (22.8 days).
The month with the least rainy days is June (11.5 days).
Average snowfall
Amherst, Guernsey
The month with the highest snowfall is January (2mm).
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0mm).
Average snowfall days
Amherst, Guernsey
- Average snowfall days in January:
0.3 days - Average snowfall days in February:
0.2 days - Average snowfall days in March:
0 days - Average snowfall days in April:
0 days - Average snowfall days in May:
0 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 days - Average snowfall days in November:
0 days - Average snowfall days in December:
0 days
The month with the highest number of snowfall days is January (0.3 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight / Average sunshine
Amherst, Guernsey
- Average daylight in January:
8h and 42min - Average daylight in February:
10h and 12min - Average daylight in March:
11h and 54min - Average daylight in April:
13h and 48min - Average daylight in May:
15h and 24min - Average daylight in June:
16h and 12min
- Average daylight in July:
15h and 48min - Average daylight in August:
14h and 24min - Average daylight in September:
12h and 36min - Average daylight in October:
10h and 48min - Average daylight in November:
9h and 6min - Average daylight in December:
8h and 12min
The month with the longest days is June (Average daylight: 16h and 12min).
The month with the shortest days is December (Average daylight: 8h and 12min).
- Average sunshine in January:
3h and 54min - Average sunshine in February:
4h and 0min - Average sunshine in March:
6h and 12min - Average sunshine in April:
9h and 6min - Average sunshine in May:
9h and 6min - Average sunshine in June:
9h and 6min
- Average sunshine in July:
9h and 42min - Average sunshine in August:
9h and 12min - Average sunshine in September:
8h and 24min - Average sunshine in October:
4h and 54min - Average sunshine in November:
3h and 54min - Average sunshine in December:
3h and 54min
The month with the most sunshine is July (Average sunshine: 9h and 42min).
The months with the least sunshine are January, November and December (Average sunshine: 3h and 54min).
Average sunshine days
Amherst, Guernsey
- Average sunshine days in January:
5.5 days - Average sunshine days in February:
6.9 days - Average sunshine days in March:
10.7 days - Average sunshine days in April:
14.8 days - Average sunshine days in May:
16.3 days - Average sunshine days in June:
16 days
- Average sunshine days in July:
15.4 days - Average sunshine days in August:
12.1 days - Average sunshine days in September:
13.1 days - Average sunshine days in October:
8.6 days - Average sunshine days in November:
4 days - Average sunshine days in December:
5.3 days
The month with the most sunshine days is May (16.3 days).
The month with the least sunshine days is November (4 days).
Average UV index
Amherst, Guernsey
The months with the highest UV index are July, August and September (UV index 5).
The month with the lowest UV index is February (UV index 2).
Average cloud cover
Amherst, Guernsey
The months with the most cloud cover are November and December (Cloud cover 63).
The month with the least cloud cover is July (Cloud cover 37).
Average visibility
Amherst, Guernsey
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
