Weather in Glasgow in July
United Kingdom · 20-year averages, July
Shoulder season. July is shoulder season in Glasgow — cheaper, quieter, and a genuine gamble. You should expect rain on 22 days of the month, which is more days wet than dry.
July is the highest-scoring month of the twelve. The nearest rival is August, and the month at the other end of the year is January.
Rain on 22 of the month's 31 days, 3 of them heavy. At that frequency a wet-weather backup is not a contingency, it is the itinerary — book the indoor things first and treat the clear days as the bonus. Nothing specialised needed — this is the month you pack for the trip rather than for the weather.
What the averages hide
Averages flatten a month, and this one hides a few things: it never really gets hot: not one day in an average July reaches 30 °C. Across the twenty years measured, the hottest July day reached 26.4 °C and the coldest night fell to 6.2 °C, and the wettest single day dropped 35 mm — roughly 29% of the month's rain in one day.
July is statistically steady but not small: the year-to-year variation is modest in relative terms, yet the wettest July on record still delivered 179 mm against 51 mm in the driest. In a month this wet, even a tame spread is a lot of rain in absolute terms — the 122 mm average is a reasonable planning figure, not a promise.
Wind is light at 10.7 km/h, so the temperature on the page is close to the temperature on your skin, and humidity runs at 86%, high enough to notice on the warm days without dominating them.
How July sits in the year
Temperatures hold steady either side: 16.5 °C in June, 18 here, 17.6 in August. Nothing about the timing within the month matters much.
Daylight in July
July is at or near the longest days of Glasgow's year: 17 hours of daylight, losing 1.3 hours across the month. Evenings are the real gain — dinner outdoors still happens in full light.
An inland climate
Despite being inland, the year stays fairly even: 16.1 °C between the year's warmest afternoons and coldest nights.
How busy it gets
Peak season. Expect the highest prices of the year and to be booking well ahead.
Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.
July in Glasgow versus nearby
If Glasgow is one option among several, the nearby comparison is worth making. Edinburgh is close enough to be a coin toss — within a degree on temperature, 4 days less rain. Manchester is close enough to be a coin toss — within a degree on temperature, 4 days less rain.
So: July is the answer for Glasgow. If it is booked out or priced out, August is the next best thing at 2 points behind, and January is the month to keep off the shortlist.
Every month in Glasgow
| Month | High °C | Low °C | Rain days | Rain mm | Humidity % | Daylight h | Score |
|---|---|---|---|---|---|---|---|
| January | 5.7 | 2.1 | 21 | 137 | 95 | 7.6 | 19 |
| February | 6.1 | 1.9 | 17 | 102 | 94 | 9.6 | 24 |
| March | 7.8 | 2.6 | 17 | 94 | 91 | 11.7 | 31 |
| April | 10.8 | 4.3 | 16 | 76 | 87 | 14.1 | 44 |
| May | 13.9 | 6.7 | 18 | 92 | 84 | 16.2 | 49 |
| June | 16.5 | 9.7 | 20 | 106 | 85 | 17.5 | 54 |
| July | 18 | 11.3 | 22 | 122 | 86 | 17 | 59 |
| August | 17.6 | 11.1 | 22 | 137 | 88 | 15.2 | 57 |
| September | 15.5 | 9.5 | 18 | 106 | 90 | 12.9 | 53 |
| October | 12.1 | 7.1 | 20 | 143 | 92 | 10.6 | 40 |
| November | 8.5 | 4.5 | 20 | 134 | 94 | 8.3 | 28 |
| December | 6.2 | 2.6 | 20 | 131 | 95 | 7 | 21 |
See all twelve months in Glasgow, or where else to go in July.
Planning the rest of the trip
- Flight time to Glasgow how long you are actually in the air
- Glasgow time zone and the difference from home
- Days until your trip count down to the departure date