Climate Insights for Upper Killay

Swansea, Wales, United Kingdom

Hottest
August
18°C peak65°F peak
Coldest
January
5°C low42°F low
Wettest
December
173 mm rain6.8 in rain
Best to Visit
July
Mild temps & low rain

Climate Overview

The climate in Upper Killay is temperate. The average annual temperature is 12°C and approximately 1,418 mm of precipitation falls per year. Upper Killay receives a notable amount of rainfall throughout the year, including during its driest month. Upper Killay is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, July, September. The coldest months are January, February, March, when temperatures can drop to 5°C. Light snow can occur between January and March.The climate in Upper Killay is temperate. The average annual temperature is 53°F and approximately 55.8 in of precipitation falls per year. Upper Killay receives a notable amount of rainfall throughout the year, including during its driest month. Upper Killay is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, July, September. The coldest months are January, February, March, when temperatures can drop to 42°F. Light snow can occur between January and March.

Temperature

0°5°10°15°20°JanFebMarAprMayJunJulAugSepOctNovDecJanMax: 8°Average: 7°Min: 5°FebMax: 9°Average: 7°Min: 6°MarMax: 9°Average: 8°Min: 6°AprMax: 11°Average: 9°Min: 7°MayMax: 14°Average: 12°Min: 10°JunMax: 17°Average: 15°Min: 13°JulMax: 18°Average: 17°Min: 15°AugMax: 18°Average: 17°Min: 15°SepMax: 17°Average: 15°Min: 14°OctMax: 14°Average: 13°Min: 12°NovMax: 11°Average: 10°Min: 8°DecMax: 10°Average: 8°Min: 7°
Max
Average
Min
0°F10°F20°F30°F40°F50°F60°F70°FJanFebMarAprMayJunJulAugSepOctNovDecJanMax: 47°FAverage: 44°FMin: 42°FFebMax: 47°FAverage: 45°FMin: 42°FMarMax: 49°FAverage: 46°FMin: 43°FAprMax: 53°FAverage: 49°FMin: 45°FMayMax: 58°FAverage: 54°FMin: 50°FJunMax: 62°FAverage: 59°FMin: 56°FJulMax: 65°FAverage: 62°FMin: 59°FAugMax: 65°FAverage: 62°FMin: 59°FSepMax: 63°FAverage: 60°FMin: 57°FOctMax: 58°FAverage: 55°FMin: 53°FNovMax: 52°FAverage: 50°FMin: 47°FDecMax: 49°FAverage: 47°FMin: 45°F
Max
Average
Min

Upper Killay sees moderate temperature variation throughout the year, ranging from 5°C to 18°C. August is the warmest month, though highs remain moderate at 18°C with a mean of 17°C. January is the coolest month, with minimum temperatures around 5°C and an average of 7°C. Daily temperature variation is modest, with an average difference of 3°C between highs and lows. The sharpest temperature change occurs between October and November, with a 3°C shift in average temperatures.Upper Killay sees moderate temperature variation throughout the year, ranging from 42°F to 65°F. August is the warmest month, though highs remain moderate at 65°F with a mean of 62°F. January is the coolest month, with minimum temperatures around 42°F and an average of 44°F. Daily temperature variation is modest, with an average difference of 6°F between highs and lows. The sharpest temperature change occurs between October and November, with a 6°F shift in average temperatures.

Precipitation

0mm50mm100mm150mm200mmJanFebMarAprMayJunJulAugSepOctNovDecJanPrecipitation: 132mmSnow: 1mmFebPrecipitation: 119mmSnow: 1mmMarPrecipitation: 111mmSnow: 3mmAprPrecipitation: 68mmSnow: 0mmMayPrecipitation: 68mmSnow: 0mmJunPrecipitation: 83mmSnow: 0mmJulPrecipitation: 89mmSnow: 0mmAugPrecipitation: 107mmSnow: 0mmSepPrecipitation: 145mmSnow: 0mmOctPrecipitation: 162mmSnow: 0mmNovPrecipitation: 160mmSnow: 0mmDecPrecipitation: 173mmSnow: 1mm
Precipitation
Snow
0in2in4in6inJanFebMarAprMayJunJulAugSepOctNovDecJanPrecipitation: 5.2inSnow (in): 0inFebPrecipitation: 4.7inSnow (in): 0inMarPrecipitation: 4.4inSnow (in): 1inAprPrecipitation: 2.7inSnow (in): 0inMayPrecipitation: 2.7inSnow (in): 0inJunPrecipitation: 3.3inSnow (in): 0inJulPrecipitation: 3.5inSnow (in): 0inAugPrecipitation: 4.2inSnow (in): 0inSepPrecipitation: 5.7inSnow (in): 0inOctPrecipitation: 6.4inSnow (in): 0inNovPrecipitation: 6.3inSnow (in): 0inDecPrecipitation: 6.8inSnow (in): 0in
Precipitation
Snow (in)

Upper Killay is a fairly wet location, receiving approximately 1,418 mm of precipitation annually, which averages out to around 118 mm per month. The wettest month is December, averaging 173 mm of rainfall. October and November also tend to see above-average precipitation. The driest month is April, with just 68 mm. That's 106 mm less than December, the wettest month. Precipitation varies noticeably between seasons, with the second half (July to December) of the year generally seeing more rainfall. Light snowfall can occur between January and March, totalling around 5cm annually. March is the snowiest month with approximately 3cm.Upper Killay is a fairly wet location, receiving approximately 55.8 in of precipitation annually, which averages out to around 4.6 in per month. The wettest month is December, averaging 6.8 in of rainfall. October and November also tend to see above-average precipitation. The driest month is April, with just 2.7 in. That's 4.2 in less than December, the wettest month. Precipitation varies noticeably between seasons, with the second half (July to December) of the year generally seeing more rainfall. Light snowfall can occur between January and March, totalling around 2in annually. March is the snowiest month with approximately 1in.

Wind

0km/h5km/h10km/h15km/h20km/h25km/h30km/hJanFebMarAprMayJunJulAugSepOctNovDecJanWind Speed: 23km/hFebWind Speed: 26km/hMarWind Speed: 22km/hAprWind Speed: 19km/hMayWind Speed: 17km/hJunWind Speed: 18km/hJulWind Speed: 18km/hAugWind Speed: 20km/hSepWind Speed: 21km/hOctWind Speed: 23km/hNovWind Speed: 24km/hDecWind Speed: 25km/h
Wind Speed
0mph5mph10mph15mph20mphJanFebMarAprMayJunJulAugSepOctNovDecJanWind Speed: 14mphFebWind Speed: 16mphMarWind Speed: 14mphAprWind Speed: 12mphMayWind Speed: 10mphJunWind Speed: 11mphJulWind Speed: 11mphAugWind Speed: 12mphSepWind Speed: 13mphOctWind Speed: 14mphNovWind Speed: 15mphDecWind Speed: 16mph
Wind Speed

Upper Killay is moderately windy, with an average annual wind speed of 21km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is February, averaging 26km/h, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in May, with average winds dropping to 17km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 9km/h gap between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 25km/h in winter, 19km/h in spring, 19km/h in summer, 23km/h in autumn.Upper Killay is very windy, with an average annual wind speed of 13mph. For context, sustained winds below 7mph are generally light, while anything above 16mph is considered strong. The windiest month is February, averaging 16mph, which can feel quite blustery and may affect outdoor activities. The calmest conditions occur in May, with average winds dropping to 10mph, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 6mph gap between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 15mph in winter, 12mph in spring, 12mph in summer, 14mph in autumn.

Best Time to Visit

Jan7°44°F
Feb7°45°F
Mar8°46°F
Apr9°49°F
May12°54°F
Jun15°59°F
Jul17°62°F
Aug17°62°F
Sep15°60°F
Oct13°55°F
Nov10°50°F
Dec8°47°F

The best time to visit Upper Killay is during July, when the weather is most comfortable for travellers. During these months, average temperatures hover around 17°C with modest rainfall averaging 89 mm per month. By contrast, August can be uncomfortably hot with highs reaching 18°C, while January is the coldest period with lows dropping to 5°C. Despite being the best months overall, some rain is still likely. Pack a waterproof layer and plan a mix of indoor and outdoor activities.The best time to visit Upper Killay is during July, when the weather is most comfortable for travellers. During these months, average temperatures hover around 62°F with modest rainfall averaging 3.5 in per month. By contrast, August can be uncomfortably hot with highs reaching 65°F, while January is the coldest period with lows dropping to 42°F. Despite being the best months overall, some rain is still likely. Pack a waterproof layer and plan a mix of indoor and outdoor activities.

Monthly Climate Data

The table below shows monthly climate averages for Upper Killay based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.The table below shows monthly climate averages for Upper Killay based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Fahrenheit (°F). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in inches (in) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in miles per hour (mph). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.

Month
Min Temperature
Max Temperature
Wind Speed
Precipitation
Snow
Jan
5 °C42 °F
8 °C47 °F
23 km/h14 mph
132 mm5.2 in
1 cm0 in
Feb
6 °C42 °F
9 °C47 °F
26 km/h16 mph
119 mm4.7 in
1 cm0 in
Mar
6 °C43 °F
9 °C49 °F
22 km/h14 mph
111 mm4.4 in
3 cm1 in
Apr
7 °C45 °F
11 °C53 °F
19 km/h12 mph
68 mm2.7 in
0 cm0 in
May
10 °C50 °F
14 °C58 °F
17 km/h10 mph
68 mm2.7 in
0 cm0 in
Jun
13 °C56 °F
17 °C62 °F
18 km/h11 mph
83 mm3.3 in
0 cm0 in
Jul
15 °C59 °F
18 °C65 °F
18 km/h11 mph
89 mm3.5 in
0 cm0 in
Aug
15 °C59 °F
18 °C65 °F
20 km/h12 mph
107 mm4.2 in
0 cm0 in
Sep
14 °C57 °F
17 °C63 °F
21 km/h13 mph
145 mm5.7 in
0 cm0 in
OctCurrent
12 °C53 °F
14 °C58 °F
23 km/h14 mph
162 mm6.4 in
0 cm0 in
Nov
8 °C47 °F
11 °C52 °F
24 km/h15 mph
160 mm6.3 in
0 cm0 in
Dec
7 °C45 °F
10 °C49 °F
25 km/h16 mph
173 mm6.8 in
1 cm0 in