Monthly Climate Comparison
The biggest temperature swing occurs between October and November, as typical highs shift from 12°C / 53.7°F to 8.5°C / 47.3°F (about 3.5°C / 6.3°F).
Jan
COLD
Feb
COLD
Mar
COOL
Apr
COOL
May
COOL
Jun
MILD
Jul
MILD
Aug
MILD
Sep
MILD
Oct
COOL
Nov
COOL
Dec
COLD
| Month | Low Temperature | High Temperature | Category |
|---|---|---|---|
| January | 1.4°C | 5.9°C | COLD |
| February | 1.4°C | 6.6°C | COLD |
| March | 2.1°C | 8.3°C | COOL |
| April | 3.5°C | 10.9°C | COOL |
| May | 6.4°C | 13.9°C | COOL |
| June | 9.4°C | 16.3°C | MILD |
| July | 11.2°C | 17.8°C | MILD |
| August | 11°C | 17.5°C | MILD |
| September | 9.3°C | 15.4°C | MILD |
| October | 6.8°C | 12°C | COOL |
| November | 3.8°C | 8.5°C | COOL |
| December | 1.5°C | 6°C | COLD |
July has the warmest typical feels-like highs (16.6°C / 62°F), while January is coolest (1.9°C / 35.5°F).
Jan
COLD
Feb
COLD
Mar
COLD
Apr
COLD
May
COOL
Jun
COOL
Jul
MILD
Aug
MILD
Sep
COOL
Oct
COOL
Nov
COLD
Dec
COLD
| Month | Low Feels Like | High Feels Like | Category |
|---|---|---|---|
| January | -2.8°C | 1.9°C | COLD |
| February | -2.8°C | 2.5°C | COLD |
| March | -1.9°C | 4.3°C | COLD |
| April | 0.1°C | 7.5°C | COLD |
| May | 3.6°C | 11.4°C | COOL |
| June | 7.3°C | 14.5°C | COOL |
| July | 9.8°C | 16.6°C | MILD |
| August | 9.6°C | 16.2°C | MILD |
| September | 7.2°C | 13.4°C | COOL |
| October | 3.9°C | 9.3°C | COOL |
| November | 0.3°C | 5.4°C | COLD |
| December | -2.4°C | 2.4°C | COLD |
October is wettest at 123.1 mm / 4.85 inches, while April is driest at 69.9 mm / 2.75 inches.
Jan
MODERATE
Feb
MODERATE
Mar
MODERATE
Apr
MODERATE
May
MODERATE
Jun
MODERATE
Jul
MODERATE
Aug
MODERATE
Sep
MODERATE
Oct
WET
Nov
MODERATE
Dec
MODERATE
| Month | Baseline | Rainfall | Category |
|---|---|---|---|
| January | 48.7 mm | 114.4 mm | MODERATE |
| February | 48.7 mm | 103.3 mm | MODERATE |
| March | 48.7 mm | 88.3 mm | MODERATE |
| April | 48.7 mm | 69.9 mm | MODERATE |
| May | 48.7 mm | 84 mm | MODERATE |
| June | 48.7 mm | 85.2 mm | MODERATE |
| July | 48.7 mm | 95.6 mm | MODERATE |
| August | 48.7 mm | 108.3 mm | MODERATE |
| September | 48.7 mm | 87.3 mm | MODERATE |
| October | 48.7 mm | 123.1 mm | WET |
| November | 48.7 mm | 103.1 mm | MODERATE |
| December | 48.7 mm | 117 mm | MODERATE |
June has the strongest peak UV (around index 6.7).
Jan
LOW-MOD
Feb
LOW-MOD
Mar
MODERATE
Apr
MODERATE
May
HIGH
Jun
HIGH
Jul
HIGH
Aug
MODERATE
Sep
MODERATE
Oct
MODERATE
Nov
LOW-MOD
Dec
LOW
| Month | Baseline | UV Index | Category |
|---|---|---|---|
| January | 0 | 1.3 | LOW-MOD |
| February | 0 | 2.3 | LOW-MOD |
| March | 0 | 4 | MODERATE |
| April | 0 | 5.4 | MODERATE |
| May | 0 | 6.4 | HIGH |
| June | 0 | 6.7 | HIGH |
| July | 0 | 6.5 | HIGH |
| August | 0 | 5.9 | MODERATE |
| September | 0 | 4.8 | MODERATE |
| October | 0 | 3.1 | MODERATE |
| November | 0 | 1.5 | LOW-MOD |
| December | 0 | 0.8 | LOW |
Daylight ranges from 7.1h in December to 17.5h in June.
Jan
SHORT
Feb
SHORT
Mar
BALANCED
Apr
LONG
May
LONG
Jun
LONG
Jul
LONG
Aug
LONG
Sep
BALANCED
Oct
BALANCED
Nov
SHORT
Dec
SHORT
| Month | Baseline | Daylight Hours | Category |
|---|---|---|---|
| January | 0h | 7.7h | SHORT |
| February | 0h | 9.6h | SHORT |
| March | 0h | 11.9h | BALANCED |
| April | 0h | 14.2h | LONG |
| May | 0h | 16.3h | LONG |
| June | 0h | 17.5h | LONG |
| July | 0h | 16.9h | LONG |
| August | 0h | 15h | LONG |
| September | 0h | 12.7h | BALANCED |
| October | 0h | 10.4h | BALANCED |
| November | 0h | 8.3h | SHORT |
| December | 0h | 7.1h | SHORT |
December is most humid (89.6%), while May is driest (77.6%).
Jan
MUGGY
Feb
MUGGY
Mar
MUGGY
Apr
MUGGY
May
MUGGY
Jun
MUGGY
Jul
MUGGY
Aug
MUGGY
Sep
MUGGY
Oct
MUGGY
Nov
MUGGY
Dec
MUGGY
| Month | Baseline | Humidity (avg) | Category |
|---|---|---|---|
| January | 73.4% | 88.4% | MUGGY |
| February | 73.4% | 84.9% | MUGGY |
| March | 73.4% | 82% | MUGGY |
| April | 73.4% | 78.8% | MUGGY |
| May | 73.4% | 77.6% | MUGGY |
| June | 73.4% | 78.4% | MUGGY |
| July | 73.4% | 80.6% | MUGGY |
| August | 73.4% | 82.4% | MUGGY |
| September | 73.4% | 83.5% | MUGGY |
| October | 73.4% | 85.6% | MUGGY |
| November | 73.4% | 88.2% | MUGGY |
| December | 73.4% | 89.6% | MUGGY |
February has the strongest typical average wind (16.6 km/h / 10.3 mph), while July is calmest (11.8 km/h / 7.3 mph).
Jan
CALM
Feb
CALM
Mar
CALM
Apr
CALM
May
CALM
Jun
CALM
Jul
CALM
Aug
CALM
Sep
CALM
Oct
CALM
Nov
CALM
Dec
CALM
| Month | Baseline | Wind (avg) | Category |
|---|---|---|---|
| January | 9.9 km/h | 16.1 km/h | CALM |
| February | 9.9 km/h | 16.6 km/h | CALM |
| March | 9.9 km/h | 15.4 km/h | CALM |
| April | 9.9 km/h | 13.7 km/h | CALM |
| May | 9.9 km/h | 13.3 km/h | CALM |
| June | 9.9 km/h | 12.7 km/h | CALM |
| July | 9.9 km/h | 11.8 km/h | CALM |
| August | 9.9 km/h | 12.2 km/h | CALM |
| September | 9.9 km/h | 13.3 km/h | CALM |
| October | 9.9 km/h | 14.8 km/h | CALM |
| November | 9.9 km/h | 14.3 km/h | CALM |
| December | 9.9 km/h | 15 km/h | CALM |
January is windiest by P95 gust signal (80.3 km/h / 49.9 mph).
Jan
VERY WINDY
Feb
VERY WINDY
Mar
VERY WINDY
Apr
VERY WINDY
May
VERY WINDY
Jun
VERY WINDY
Jul
VERY WINDY
Aug
VERY WINDY
Sep
VERY WINDY
Oct
VERY WINDY
Nov
VERY WINDY
Dec
VERY WINDY
| Month | Baseline | Wind (gusts) | Category |
|---|---|---|---|
| January | 0 km/h | 80.3 km/h | VERY WINDY |
| February | 0 km/h | 76.4 km/h | VERY WINDY |
| March | 0 km/h | 70.6 km/h | VERY WINDY |
| April | 0 km/h | 61.6 km/h | VERY WINDY |
| May | 0 km/h | 58.7 km/h | VERY WINDY |
| June | 0 km/h | 55.8 km/h | VERY WINDY |
| July | 0 km/h | 52.2 km/h | VERY WINDY |
| August | 0 km/h | 54.7 km/h | VERY WINDY |
| September | 0 km/h | 60.8 km/h | VERY WINDY |
| October | 0 km/h | 65.5 km/h | VERY WINDY |
| November | 0 km/h | 67.7 km/h | VERY WINDY |
| December | 0 km/h | 75.2 km/h | VERY WINDY |
August has the most rain days (~20.2), while September has the fewest (~16.4). Rain days count the average number of days in a month with measurable rain (about 0.1 mm or more).
Jan
VERY FREQUENT
Feb
VERY FREQUENT
Mar
VERY FREQUENT
Apr
VERY FREQUENT
May
VERY FREQUENT
Jun
VERY FREQUENT
Jul
VERY FREQUENT
Aug
VERY FREQUENT
Sep
VERY FREQUENT
Oct
VERY FREQUENT
Nov
VERY FREQUENT
Dec
VERY FREQUENT
| Month | Baseline | Rain Days | Category |
|---|---|---|---|
| January | 14.9 days | 19.4 days | VERY FREQUENT |
| February | 14.9 days | 17.4 days | VERY FREQUENT |
| March | 14.9 days | 17.7 days | VERY FREQUENT |
| April | 14.9 days | 17.1 days | VERY FREQUENT |
| May | 14.9 days | 18.1 days | VERY FREQUENT |
| June | 14.9 days | 18.2 days | VERY FREQUENT |
| July | 14.9 days | 19.5 days | VERY FREQUENT |
| August | 14.9 days | 20.2 days | VERY FREQUENT |
| September | 14.9 days | 16.4 days | VERY FREQUENT |
| October | 14.9 days | 19.4 days | VERY FREQUENT |
| November | 14.9 days | 18.4 days | VERY FREQUENT |
| December | 14.9 days | 18.6 days | VERY FREQUENT |
January has the most heavy rain/washout risk days (~9). Heavy rain days are the average number of days likely to bring stronger downpours that can disrupt outdoor plans.
Jan
PERSISTENT
Feb
PERSISTENT
Mar
PERSISTENT
Apr
FREQUENT
May
PERSISTENT
Jun
PERSISTENT
Jul
PERSISTENT
Aug
PERSISTENT
Sep
PERSISTENT
Oct
PERSISTENT
Nov
PERSISTENT
Dec
PERSISTENT
| Month | Baseline | Heavy Rain Days | Category |
|---|---|---|---|
| January | 0 days | 9 days | PERSISTENT |
| February | 0 days | 8 days | PERSISTENT |
| March | 0 days | 6 days | PERSISTENT |
| April | 0 days | 5 days | FREQUENT |
| May | 0 days | 7 days | PERSISTENT |
| June | 0 days | 6 days | PERSISTENT |
| July | 0 days | 7 days | PERSISTENT |
| August | 0 days | 7 days | PERSISTENT |
| September | 0 days | 7 days | PERSISTENT |
| October | 0 days | 8 days | PERSISTENT |
| November | 0 days | 8 days | PERSISTENT |
| December | 0 days | 8 days | PERSISTENT |
January has the highest heat-risk day count (~0 days). Heat days are the average number of days that exceed our location-specific heat-risk threshold.
Jan
LOW
Feb
LOW
Mar
LOW
Apr
LOW
May
LOW
Jun
LOW
Jul
LOW
Aug
LOW
Sep
LOW
Oct
LOW
Nov
LOW
Dec
LOW
| Month | Baseline | Heat Days | Category |
|---|---|---|---|
| January | 0 days | 0 days | LOW |
| February | 0 days | 0 days | LOW |
| March | 0 days | 0 days | LOW |
| April | 0 days | 0 days | LOW |
| May | 0 days | 0 days | LOW |
| June | 0 days | 0 days | LOW |
| July | 0 days | 0 days | LOW |
| August | 0 days | 0 days | LOW |
| September | 0 days | 0 days | LOW |
| October | 0 days | 0 days | LOW |
| November | 0 days | 0 days | LOW |
| December | 0 days | 0 days | LOW |
Rain & Sunshine Patterns
Driest Months
#1 April
Best for: outdoor activities & sightseeing
#2 May
Best for: outdoor activities & sightseeing
#3 June
Best for: outdoor activities & sightseeing
Wettest Months
#1 October
Expect: possible showers, pack waterproofs
#2 December
Expect: possible showers, pack waterproofs
#3 January
Expect: possible showers, pack waterproofs
UV & Sun Protection Calendar
High UV Alert:
May, June, July require serious sun protection.
Jan
1
LOW-MOD
Feb
2
LOW-MOD
Mar
4
MODERATE
Apr
5
MODERATE
May
6
HIGH
Jun
7
HIGH
Jul
6
HIGH
Aug
6
MODERATE
Sep
5
MODERATE
Oct
3
MODERATE
Nov
2
LOW-MOD
Dec
1
LOW
Extreme (11+)
Avoid sun during midday, use SPF 50+
Very High (8-10)
Essential sun protection required
High (6-7)
Use SPF 30+, wear hat & sunglasses
Moderate (3-5)
Sun protection recommended
Low-Moderate (1-2)
Minimal protection needed
Low (0)
No protection required
Daylight Hours
Daylight varies from 7.1 hours in December (winter) to 17.5 hours in June (summer), which is a difference of 10.4 hours.
Shortest Days
December
7.1h
Average Sunrise:08:39
Average Sunset:15:45
Plan daytime activities for midday when light is best. Early sunsets mean evening plans should account for darkness.
Longest Days
June
17.5h
Average Sunrise:03:32
Average Sunset:21:01
Extended daylight perfect for evening activities and late dining. You can fit more sightseeing into each day.
Wind & Humidity Overview
Wind Conditions
Average wind speed
Windiest months:
February (
17 km/h)
January (
16 km/h)
March (
15 km/h)
Packing tip: Conditions are generally calm, but a light layer is always handy.
Humidity Levels
Average humidity
83%
Most humid:
December (
90%)
Least humid:
May (
78%)
Packing tip: Choose breathable, natural fabrics like cotton or linen for comfort in humid conditions.
Seasonal Overview
Northern Hemisphere seasons shape the weather patterns throughout the year. Here's what to expect in each season:
Winter
January, February, December
Avg High
Avg Low
Avg Rain
Cool weather; bring layers and a jacket
Spring
March, April, May
Avg High
Avg Low
Avg Rain
Warming trend with frequent showers; pack waterproofs
Summer
June, July, August
Avg High
Avg Low
Avg Rain
Comfortable temperatures; enjoy outdoor activities
Autumn
September, October, November
Avg High
Avg Low
Avg Rain
Wet season begins; bring rain gear
Risk Ranking Table
A month-by-month ranking of key weather risks and comforts for this destination, based on historical climate data.
| Ranking Goal | #1 | #2 | #3 | #4 |
|---|---|---|---|---|
| Lowest rain risk | Apr 5 risk days | Mar 6 risk days | Jun 6 risk days | May 7 risk days |
| Lowest heatwave risk | Jan 0 risk days | Feb 0 risk days | Mar 0 risk days | Apr 0 risk days |
| Lowest cold risk | Jul 8 risk days | Aug 9 risk days | Jun 18 risk days | Sep 18 risk days |
| Lowest wind disruption risk | Jul 52 km/h | Aug 55 km/h | Jun 56 km/h | May 59 km/h |
| Most comfortable evenings | Jul 49 / 100 | Aug 47 / 100 | Jun 43 / 100 | Sep 38 / 100 |
| Best outdoor reliability | Apr 93 / 100 | Jun 86 / 100 | Jul 77 / 100 | Mar 75 / 100 |
Monthly Details
Click any month for detailed weather information and packing advice.
Looking for the best time to visit?
Get personalized month rankings based on weather comfort, outdoor activity suitability, and seasonal conditions.
Travel planning FAQ
Frequently Asked Questions
Quick answers to the weather questions you ask the most.
When is Glasgow warmest?
July is typically the warmest month in Glasgow, with average high temperatures reaching around 18°C (64°F). This is peak summer weather, ideal for outdoor activities and sightseeing.
When is Glasgow coldest?
January is usually the coldest month, with average low temperatures dropping to around 1°C (34°F). Pack warm layers if visiting during this time, especially for evening activities.
When does Glasgow get the most rain?
October typically sees the most rainfall in Glasgow, averaging around 123mm (4.8 inches). It's wise to pack waterproof layers and have some indoor backup plans if you're visiting during this month.
What is the driest month in Glasgow?
April is typically the driest month, with average rainfall of just 70mm (2.8 inches). This makes it an excellent time for outdoor exploration and activities with minimal risk of rain disruption.
How much does the temperature vary in Glasgow throughout the year?
Temperatures in Glasgow range from average lows of 6°C (42°F) to highs of 12°C (53°F). This variation means you'll want to pack differently depending on when you visit, as layers are key for adapting to the seasonal changes.
Do I need sun protection when visiting Glasgow?
Yes, sun protection is important in Glasgow. UV levels can reach 7 during peak months, which is considered high. Pack sunscreen (SPF 30+), sunglasses, and a hat, especially if you'll be outdoors for extended periods.