Las Vegas Weather in May
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North America › 🇺🇸 United States › Las Vegas
Updated: March 2026
Is May a Good Time to Visit Las Vegas?
May is a good time to visit Las Vegas (7/10). With 13 daily sunshine hours and only 1 rain days, this month delivers genuinely reliable outdoor conditions, ranking it 3rd sunniest of the year in Las Vegas. Culture-focused travellers and those who prefer lighter crowds will find May a practical choice, with prices running lower than peak June without sacrificing all the good weather. April offers a similar profile at lower hotel rates if dates are flexible. The main practical note: Las Vegas's popular sites are busiest between 10am and 3pm regardless of season. Arriving at opening time or after 4pm makes a significant difference to the experience. 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.
The single most important thing to know about visiting Las Vegas in May: the gap between the 31°C daytime high and the 17°C overnight low is large enough to catch underprepared visitors off guard, so layers are non-negotiable. Precipitation totals 5mm for the month, spread across roughly 1 days, and 13 sunshine hours per day give you a reliable window for outdoor plans.
31°C
Avg High
17°C
Avg Low
1 days
Rain Days
13h
Sunshine
65%
Humidity
Temperature in Las Vegas in May
The 14°C day-to-night swing is large enough to require a deliberate layering strategy, what works at noon will be noticeably cold by 10pm. Humidity averages 65%, which is comfortable for most visitors. On warmer days, lighter fabrics help with the mild stickiness in the afternoon. 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. Wind averages 20 km/h, light enough to be refreshing on warm days but noticeable in open coastal areas or elevated viewpoints. In Fahrenheit: 88°F average high, 63°F overnight low. Data sourced from Open-Meteo ERA5 climate reanalysis (1991–2020 normals).
Temperature in May
Monthly Precipitation (mm)
What to Wear in Las Vegas in May
Packing for Las Vegas in May means dressing for 31°C days and 17°C evenings. A lightweight linen or cotton shirt with loose-fit trousers or a sundress handles the 31°C daytime heat. Evenings drop 14°C to around 17°C, a notable shift that catches underprepared visitors off guard. Pack a dedicated evening layer. For footwear, breathable walking sandals work for casual exploration, but closed-toe trainers are better for uneven surfaces in the historic centre.
Local tip: Layers are more practical than a single heavy garment in Las Vegas. The day-to-evening temperature shift rewards packing a versatile mid-layer you can add or remove as conditions change.
Events in Las Vegas in May
May has no major festivals or public holidays in Las Vegas, 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.
What to Pack for Las Vegas in May
Based on 31°C average highs and 1 rainy days
- Lightweight breathable clothing
- Linen or bamboo shirts for the hottest hours
- Sun hat with a wide brim
- UV-protective sunglasses
- Hydration bottle (at least 1 litre)
- Quick-dry travel towel
- Anti-chafe balm for long walking days
- Moisture-wicking synthetic fabrics for active days
- SPF 30+ sunscreen
- Comfortable walking shoes (a second pair lets the first air out overnight)
- Universal travel adapter
- Small day pack for city exploration
- Reusable water bottle
Best Activities in Las Vegas in May
- Early morning walk through Las Vegas's historic market districtBest before 9amTemperatures are still manageable at 27°C before the midday heat builds
- Open-air rooftop dining at sunsetFrom 6pm onwardsThe 31°C daytime heat drops noticeably after sunset, making al fresco dining comfortable
- Waterfront promenade or harbour walkEarly morning or after 5pmSea breezes cut through the humidity, making coastal routes the most pleasant in heat
- Guided cycling tour of the old quarterFirst tour of the day (7-9am)The low-traffic window before tourist crowds and the cooler morning air make this the prime riding slot
- Afternoon in a world-class museum or galleryAfternoon (2-5pm)Pairs well with outdoor morning activities and provides a mid-day rest from sightseeing
- Coffee-house or traditional cafe culture experienceMid-morning or post-lunchA cultural ritual in this region that rewards slow appreciation regardless of weather
- Evening live music, theatre, or opera performanceEvening shows typically at 7-9pmConsistent evening temperatures make getting to and from evening venues comfortable
- Visit the main botanical garden or city park at seasonal peakYear-round; best light in morningMay brings distinct seasonal changes to public green spaces worth exploring
- Seek out chilled local specialities: cold-brew tea, ice desserts, or chilled seafood at street-level stallsAny time; most atmospheric in evening marketsHot-weather street food culture peaks in May, with vendors setting up specifically for warm evenings
Why is Las Vegas warm in May?
May marks the transition into warmer conditions in Las Vegas, as the sun angle climbs and day length extends. Temperatures averaging 31°C by day and 17°C overnight reflect a city shaking off winter: the morning air still carries a cool edge, but afternoons are noticeably warmer than even four weeks prior. At 36 degrees north latitude, spring is one of the most dynamic periods in the annual cycle, with weekly temperature changes that can be larger than the month-to-month shifts of summer. This volatility is part of the appeal: Las Vegas in May has a freshness and energy that peak-summer heat tends to mute. The warmth is sufficient for outdoor dining and long walking days. 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.
Frequently Asked Questions: Las Vegas in May
May ranks 3rd sunniest of the year in Las Vegas, with an average 13 daily sunshine hours. The driest months are May, June, and September. July is the hottest month (39°C avg high); December is the coolest (13°C). From here, temperatures rise 6°C into June. Compared to last month (April: 26°C high, 2 rain days), May is warmer and drier. May is among the top three sunniest months to visit Las Vegas.
Year-Round Climate
Plan Your Trip to Las Vegas
Data Sources for Las Vegas
Climate normals represent 30-year averages (1991-2020). Individual years may vary.