Monthly weather averages & travel planning

North America › 🇲🇽 Mexico › Guadalajara
Updated: March 2026
August is a fair time to visit Guadalajara (5/10). With 10 daily sunshine hours and only 23 rain days, this month delivers genuinely reliable outdoor conditions, ranking it 8th sunniest of the year in Guadalajara. Culture-focused travellers and those who prefer lighter crowds will find August a practical choice, with prices running lower than peak March without sacrificing all the good weather. September offers a similar profile at lower hotel rates if dates are flexible. Watch out for prolonged rain stretches: with 23 wet days, a fully outdoor itinerary is risky. Build in museum days and covered market visits as contingency. Planning tips: accommodation is generally available without long lead times, and flight prices are typically lower than peak season. Flexible travellers will find the best deals by booking 2-4 weeks ahead. Mid-week arrivals consistently unlock lower hotel rates than weekend check-ins.
Planning a trip to Guadalajara in August? Days warm to 26°C on average while evenings hold at 17°C, giving you a clear sense of what to pack. The month delivers roughly 10 hours of sunshine per day and 173mm of rainfall spread across 23 wet days, so there is plenty of fair weather to work with.
26°C
79°F
Avg High
17°C
63°F
Avg Low
23 days
173 mm total
Rain Days
10h
per day avg
Sunshine
78%
Humid
Humidity
The 9°C day-night temperature range is typical for continental climates: a light jacket in the morning that you shed by midday and need again after sunset. At 78% humidity, the 26°C daytime high feels 2-4°C warmer in practice: quick-dry fabrics and shade-seeking between noon and 3pm are the sensible response. UV index averages 9 this month, classed as high to very high. SPF 30+ sunscreen, a brim hat, and sunglasses are not optional between 10am and 4pm. Winds are calm at an average 11 km/h, so wind-chill is not a factor in planning your clothing. In Fahrenheit: 79°F average high, 63°F overnight low. Data sourced from Open-Meteo ERA5 climate reanalysis (1991–2020 normals).
Packing for Guadalajara in August means dressing for 26°C days and 17°C evenings. A light cotton tee with a casual overshirt works well at 26°C, the overshirt doubles as a layer for air-conditioned venues. Evening temperatures settle at 17°C, a modest 9°C drop that a light cardigan or denim jacket covers. Comfortable walking trainers are the versatile choice for both outdoor sightseeing and indoor venues. With 23 rain days expected, a compact travel umbrella is worth the bag space. A waterproof jacket is better than an umbrella if you plan full-day outdoor routes. At 78% average humidity, quick-dry synthetic or bamboo fabrics dry overnight and stay comfortable longer than cotton.
Local tip: Guadalajara sees heavy rain periods where a compact travel umbrella can feel inadequate. A packable waterproof jacket offers better coverage for prolonged downpours and leaves both hands free for maps and cameras.
August has no major festivals or public holidays in Guadalajara, which is one of its practical advantages for independent travellers. Attractions run at lower capacity than during peak event periods, queues are shorter, and accommodation is easier to find without needing to book many months in advance. Local restaurants, markets, and transport operate at a relaxed pace, making this an ideal time for visitors who prefer a more authentic, unhurried experience of everyday city life rather than large crowds drawn in by a single major headline event.
Based on 26°C average highs and 23 rainy days
Guadalajara's August climate is governed by the Inter-Tropical Convergence Zone (ITCZ), which draws moisture-laden trade winds across the region, producing the characteristic wet season rainfall of warm tropical cities. Daytime heat peaks around 26°C, moderated slightly by afternoon convective showers. Overnight temperatures remain warm at 17°C because the humid air retains heat effectively. Climate data: Open-Meteo ERA5 (1991–2020).
Sunshine Hours
The average number of hours per day with direct sunlight. Calculated from satellite measurements. Days with more than 7 hours of sunshine are ideal for outdoor activities. Under 3 hours means overcast conditions dominate.
UV Index
A scale from 0-11+ measuring ultraviolet radiation intensity. UV 0-2: Minimal risk. UV 3-5: Moderate, wear sunscreen. UV 6-7: High, hat and SPF 30+ essential. UV 8-10: Very High, limit midday exposure. UV 11+: Extreme, seek shade between 10am-4pm.
Rain Days
A rain day is counted when precipitation exceeds 0.1mm. This threshold captures even light drizzle. Unlike total rainfall in mm, rain days tells you how often you might need an umbrella, which is useful for planning outdoor activities.
Humidity
Relative humidity as a percentage. Below 40%: Dry, skin and throat may feel parched. 40-60%: Comfortable, ideal for most people. 60-80%: Sticky, light breathable fabrics recommended. Above 80%: Muggy, heat feels more intense; quick-dry clothing is essential.
Guadalajara in August
August ranks 8th sunniest of the year in Guadalajara, with an average 10 daily sunshine hours. The driest months are March, April, and December. May is the hottest month (32°C avg high); January is the coolest (24°C). From here, temperatures fall 0°C into September. Compared to last month (July: 26°C high, 24 rain days), August is similarly warm and drier. August sits in the middle of the annual sunshine ranking for Guadalajara, offering a reasonable balance of good weather and manageable crowds.
| Month | High | Low | Rain Days | Sun | Details |
|---|---|---|---|---|---|
| January | 24°C | 10°C | 2 | 10h | View |
| February | 26°C | 12°C | 2 | 11h | View |
| March | 29°C | 14°C | 1 | 12h | View |
| April | 31°C | 16°C | 1 | 12h | View |
| May | 32°C | 17°C | 4 | 12h | View |
| June | 29°C | 18°C | 17 | 11h | View |
| July | 26°C | 17°C | 24 | 10h | View |
| August | 26°C | 17°C | 23 | 10h | View |
| September | 26°C | 16°C | 20 | 10h | View |
| October | 26°C | 15°C | 9 | 10h | View |
| November | 25°C | 13°C | 3 | 10h | View |
| December | 24°C | 11°C | 1 | 10h | View |
January
2 rain days, 10h sun
February
2 rain days, 11h sun
March
1 rain days, 12h sun
April
1 rain days, 12h sun
May
4 rain days, 12h sun
June
17 rain days, 11h sun
July
24 rain days, 10h sun
August
23 rain days, 10h sun
September
20 rain days, 10h sun
October
9 rain days, 10h sun
November
3 rain days, 10h sun
December
1 rain days, 10h sun
Data Sources for Guadalajara
Climate normals represent 30-year averages (1991-2020). Individual years may vary.