Stewarton sits near the bottom of UK towns for July heat
On a normal January night the air cools to about 1.1°C (34°F). The rainiest month is October; the driest is April. Rain is plentiful here, more than falls on 95% of UK towns. Picnics, hikes and garden evenings come into their own from June to August, with highs of 17–19°C.
Met Office 1991–2020 averages for the town itself.
A year in Stewarton at a glance
Each month’s typical high and low, in °C.
What a year in Stewarton feels like
Typical highs and lows by season and by month, from the Met Office’s 1991–2020 averages.
About 1,416 mm of rain a year
October is the wettest month and April the driest. About 48 days a year bring 10 mm (0.4 in) or more. 2nd wettest of 13 East Ayrshire towns of 2,500+.
Rain by month
Millimetres
Sunshine by month
Hours of bright sunshine at Paisley
A frosty town: 52 air frosts and 3 days of 25°C a year
On about 52 nights a year the air drops below freezing, and on about under 1 days it stays below freezing all day. About 3 days a year reach 25°C (77°F).
Day counts are 1991–2020 averages from the Met Office’s 2 km grid. The Met Office calls a day of 25°C or more a summer day and a night below 0°C an air frost; ground frosts, on grass, come more often.
The Met Office station at Paisley
Paisley is 12 miles north of Stewarton, 32 m (105 ft) above sea level. It is the nearest of the 37 long-running stations the Met Office publishes in full.
| Month | High | Low | Rain | Air frosts | Sun (hours) |
|---|---|---|---|---|---|
| January | 7.1°C | 1.9°C | 147 mm | 8.5 | 39 |
| February | 7.8°C | 2.1°C | 111 mm | 7.3 | 69 |
| March | 9.9°C | 3.2°C | 100 mm | 4.3 | 103 |
| April | 12.9°C | 5.1°C | 72 mm | 0.9 | 133 |
| May | 16.1°C | 7.4°C | 63 mm | 0.1 | 184 |
| June | 18.3°C | 10.2°C | 67 mm | 0.0 | 161 |
| July | 19.7°C | 12.1°C | 76 mm | 0.0 | 149 |
| August | 19.5°C | 11.9°C | 90 mm | 0.0 | 151 |
| September | 16.7°C | 9.9°C | 99 mm | 0.0 | 116 |
| October | 12.9°C | 6.8°C | 134 mm | 0.9 | 89 |
| November | 9.6°C | 4.3°C | 133 mm | 3.6 | 54 |
| December | 6.8°C | 1.5°C | 136 mm | 9.7 | 36 |
| Year | 13.1°C | 6.4°C | 1,229 mm | 35 | 1,282 |
Met Office historic station data, Paisley, 1991–2020 months averaged (a month needs 20 of the 30 years; estimated values counted, missing months left out). Sunshine: Campbell-Stokes recorder.
How Stewarton compares
Against the 2,537 towns and cities of 2,500 or more across the UK, each with its own Met Office averages, and its place among East Ayrshire towns that size.
Nearby towns’ climate
The nearest towns of 1,000+ within 12 miles: a hill, a valley or the sea can make a real difference over a few miles.
| Town | July high | January low | Rain a year |
|---|---|---|---|
| Stewarton | 18.5°C | 1.1°C | 1,416 mm |
| Kilmaurs 3.0 mi | 19.2°C 0.7°C warmer | 1.6°C about the same | 1,196 mm |
| Kilmarnock 4.8 mi | 19.3°C 0.8°C warmer | 1.7°C 0.7°C milder | 1,173 mm |
| Crosshouse 4.9 mi | 19.1°C 0.6°C warmer | 1.9°C 0.8°C milder | 1,181 mm |
| Hurlford and Crookedholm 6.2 mi | 19.0°C about the same | 1.7°C 0.7°C milder | 1,217 mm |
| Dreghorn 6.5 mi | 19.2°C 0.7°C warmer | 2.1°C 1.1°C milder | 1,121 mm |
| Irvine 6.6 mi | 19.2°C 0.7°C warmer | 2.3°C 1.2°C milder | 1,141 mm |
Stewarton weather by month
Average daily high and low, mean temperature and rain, 1991–2020, for the town itself (the Met Office’s HadUK-Grid).
| Month | High | Low | Mean | Rain |
|---|---|---|---|---|
| January | 6.6°C 44°F | 1.1°C 34°F | 3.8°C | 146 mm 5.7 in |
| February | 7.2°C 45°F | 1.2°C 34°F | 4.2°C | 118 mm 4.6 in |
| March | 9.0°C 48°F | 2.3°C 36°F | 5.6°C | 111 mm 4.4 in |
| April | 11.8°C 53°F | 3.7°C 39°F | 7.8°C | 77 mm 3.0 in |
| May | 15.0°C 59°F | 6.2°C 43°F | 10.5°C | 81 mm 3.2 in |
| June | 17.2°C 63°F | 9.0°C 48°F | 13.1°C | 90 mm 3.5 in |
| July | 18.5°C 65°F | 10.7°C 51°F | 14.6°C | 109 mm 4.3 in |
| August | 18.4°C 65°F | 10.4°C 51°F | 14.5°C | 122 mm 4.8 in |
| September | 15.9°C 61°F | 8.8°C 48°F | 12.4°C | 115 mm 4.5 in |
| October | 12.5°C 55°F | 6.0°C 43°F | 9.3°C | 151 mm 5.9 in |
| November | 9.1°C 48°F | 3.3°C 38°F | 6.2°C | 145 mm 5.7 in |
| December | 6.8°C 44°F | 1.0°C 34°F | 4.0°C | 151 mm 5.9 in |
| Year | 12.3°C | 5.3°C | 8.8°C | 1,416 mm |
Where Stewarton’s numbers come from
Averages over 30 years, not a forecast.
- Mean temperature, rain and day counts: HadUK-Grid 1991–2020 averages for the 2 Met Office 2 km grid squares whose centre lies inside Stewarton’s locality.
- Highs and lows: the Met Office publishes average daily maxima and minima on its 12 km grid; each is moved by the difference between the town’s 2 km mean temperature and the 12 km square’s, which carries the town’s own height and setting over.
- Weather station and sunshine: Met Office historic station data for Paisley, 12 miles away, months of 1991–2020 averaged.
- Comparisons: every town and city of 2,500 or more across the UK, all four nations, read the same way.
Met Office HadUK-Grid · Met Office Climate Data Portal · Historic station data. Open Government Licence v3.0.
Questions about Stewarton’s climate
How warm does Stewarton get in summer?
July is the warmest month, with average highs of 18.5°C (65°F). About 3 days a year reach 25°C (77°F), fewer than 89% of UK towns.
How cold does Stewarton get in winter?
December nights average 1.0°C (34°F). The air drops below freezing on about 52 nights a year, and about under 1 days a year stay below freezing all day.
How much rain does Stewarton get?
About 1,416 mm (56 in) a year, more than 95% of UK towns. October is the wettest month (151 mm) and April the driest (77 mm).
How sunny is it?
The nearest Met Office station with a sunshine record, Paisley (12 miles away), averages 1,282 hours of bright sunshine a year. Sunshine isn’t on the town grid, so this is the station’s figure.
Where do these figures come from?
The Met Office’s HadUK-Grid 1991–2020 averages, which turn thousands of weather stations into a map of the UK in 2 km squares; the page reads the squares inside Stewarton. They are 30-year averages, not a forecast.
Contains Met Office data © Crown copyright 2026, Open Government Licence v3.0. HadUK-Grid 1991–2020 averages via the Met Office Climate Data Portal; station averages from Met Office historic station data. Today’s forecast for Stewarton →
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