Garth weather

The Garth weather guide shows monthly weather averages (including daytime and night-time temperatures, rainfall and hours of sunshine) for holidays in Garth, Powys, Wales in 2026/2027.

• Garth weather averages
• Garth weather by month
• Back to Powys
• Back to Wales

Garth weather averages

Check the Garth weather averages for each month of the year including maximum daytime and minimum night-time temperatures, monthly rainfall, number of days with rain and average daily hours of sunshine for Garth, Powys, Wales.

Back to top

Garth weather by month

Check the weather for Garth, Powys, Wales for a particular month by selecting from the list below. This gives the best indication of what to expect from the weather months in advance.

• January
• February
• March
• April
• May
• June
• July
• August
• September
• October
• November
• December

Back to top

Garth weather in January

The average maximum daytime temperature in Garth in January is a cold 6°C (43°F), while the average minimum night-time temperature is a cold 1°C (34°F). You can expect on average 1 hours of sunshine a day in Garth during January.

• 6
  6°C max day temperature
• 1
  1 hour of sunshine per day
• 21
  21 days with some rainfall
• 1
  1°C min night temperature
• 206
  206 mm of monthly rainfall

On average 206 mm (8.1 inches) of rain normally falls in Garth during January with rain falling on 21 days of the month.

Back to months

Garth weather in February

The average maximum daytime temperature in Garth in February is a cold 6°C (43°F), while the average minimum night-time temperature is a cold 1°C (34°F). You can expect on average 2 hours of sunshine a day in Garth during February.

• 6
  6°C max day temperature
• 2
  2 hours of sunshine per day
• 17
  17 days with some rainfall
• 1
  1°C min night temperature
• 148
  148 mm of monthly rainfall

On average 148 mm (5.8 inches) of rain normally falls in Garth during February with rain falling on 17 days of the month.

Back to months

Garth weather in March

The average maximum daytime temperature in Garth in March is a cool 8°C (46°F), while the average minimum night-time temperature is a cold 2°C (36°F). You can expect on average 3 hours of sunshine a day in Garth during March.

• 8
  8°C max day temperature
• 3
  3 hours of sunshine per day
• 18
  18 days with some rainfall
• 2
  2°C min night temperature
• 149
  149 mm of monthly rainfall

On average 149 mm (5.9 inches) of rain normally falls in Garth during March with rain falling on 18 days of the month.

Back to months

Garth weather in April

The average maximum daytime temperature in Garth in April is a cool 10°C (50°F), while the average minimum night-time temperature is a cold 3°C (37°F). You can expect on average 4 hours of sunshine a day in Garth during April.

• 10
  10°C max day temperature
• 4
  4 hours of sunshine per day
• 15
  15 days with some rainfall
• 3
  3°C min night temperature
• 108
  108 mm of monthly rainfall

On average 108 mm (4.3 inches) of rain normally falls in Garth during April with rain falling on 15 days of the month.

Back to months

Garth weather in May

The average maximum daytime temperature in Garth in May is a comfortable 14°C (57°F), while the average minimum night-time temperature is a cold 5°C (41°F). You can expect on average 5 hours of sunshine a day in Garth during May.

• 14
  14°C max day temperature
• 5
  5 hours of sunshine per day
• 14
  14 days with some rainfall
• 5
  5°C min night temperature
• 93
  93 mm of monthly rainfall

On average 93 mm (3.7 inches) of rain normally falls in Garth during May with rain falling on 14 days of the month.

Back to months

Garth weather in June

The average maximum daytime temperature in Garth in June is a comfortable 16°C (61°F), while the average minimum night-time temperature is a cool 8°C (46°F). You can expect on average 5 hours of sunshine a day in Garth during June.

• 16
  16°C max day temperature
• 5
  5 hours of sunshine per day
• 15
  15 days with some rainfall
• 8
  8°C min night temperature
• 98
  98 mm of monthly rainfall

On average 98 mm (3.9 inches) of rain normally falls in Garth during June with rain falling on 15 days of the month.

Back to months

Garth weather in July

The average maximum daytime temperature in Garth in July is a comfortable 18°C (64°F), while the average minimum night-time temperature is a cool 10°C (50°F). You can expect on average 5 hours of sunshine a day in Garth during July.

• 18
  18°C max day temperature
• 5
  5 hours of sunshine per day
• 15
  15 days with some rainfall
• 10
  10°C min night temperature
• 87
  87 mm of monthly rainfall

On average 87 mm (3.4 inches) of rain normally falls in Garth during July with rain falling on 15 days of the month.

Back to months

Garth weather in August

The average maximum daytime temperature in Garth in August is a comfortable 18°C (64°F), while the average minimum night-time temperature is a cool 10°C (50°F). You can expect on average 5 hours of sunshine a day in Garth during August.

• 18
  18°C max day temperature
• 5
  5 hours of sunshine per day
• 17
  17 days with some rainfall
• 10
  10°C min night temperature
• 121
  121 mm of monthly rainfall

On average 121 mm (4.8 inches) of rain normally falls in Garth during August with rain falling on 17 days of the month.

Back to months

Garth weather in September

The average maximum daytime temperature in Garth in September is a comfortable 16°C (61°F), while the average minimum night-time temperature is a cool 8°C (46°F). You can expect on average 4 hours of sunshine a day in Garth during September.

• 16
  16°C max day temperature
• 4
  4 hours of sunshine per day
• 17
  17 days with some rainfall
• 8
  8°C min night temperature
• 144
  144 mm of monthly rainfall

On average 144 mm (5.7 inches) of rain normally falls in Garth during September with rain falling on 17 days of the month.

Back to months

Garth weather in October

The average maximum daytime temperature in Garth in October is a cool 12°C (54°F), while the average minimum night-time temperature is a cold 6°C (43°F). You can expect on average 3 hours of sunshine a day in Garth during October.

• 12
  12°C max day temperature
• 3
  3 hours of sunshine per day
• 19
  19 days with some rainfall
• 6
  6°C min night temperature
• 170
  170 mm of monthly rainfall

On average 170 mm (6.7 inches) of rain normally falls in Garth during October with rain falling on 19 days of the month.

Back to months

Garth weather in November

The average maximum daytime temperature in Garth in November is a cool 9°C (48°F), while the average minimum night-time temperature is a cold 3°C (37°F). You can expect on average 2 hours of sunshine a day in Garth during November.

• 9
  9°C max day temperature
• 2
  2 hours of sunshine per day
• 20
  20 days with some rainfall
• 3
  3°C min night temperature
• 197
  197 mm of monthly rainfall

On average 197 mm (7.8 inches) of rain normally falls in Garth during November with rain falling on 20 days of the month.

Back to months

Garth weather in December

The average maximum daytime temperature in Garth in December is a cold 7°C (45°F), while the average minimum night-time temperature is a cold 2°C (36°F). You can expect on average 1 hours of sunshine a day in Garth during December.

• 7
  7°C max day temperature
• 1
  1 hour of sunshine per day
• 21
  21 days with some rainfall
• 2
  2°C min night temperature
• 211
  211 mm of monthly rainfall

On average 211 mm (8.3 inches) of rain normally falls in Garth during December with rain falling on 21 days of the month.

Back to months