Lima Weather in May
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South America › 🇵🇪 Peru › Lima
Updated: March 2026
Is May a Good Time to Visit Lima?
May is a excellent time to visit Lima (8/10). With 11 daily sunshine hours and only 0 rain days, this month delivers genuinely reliable outdoor conditions, ranking it 7th sunniest of the year in Lima. Beach and outdoor-focused visitors will find May ideal, though hotel prices reflect demand and popular sites get crowded by mid-morning. June offers a similar profile at lower hotel rates if dates are flexible. The main practical note: Lima'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: book accommodation at least 6-8 weeks ahead, as popular hotels fill quickly during May. Purchasing skip-the-line tickets for major attractions in advance saves meaningful time. If you have flexibility, arriving a few days before or after peak weekends reduces both crowds and prices noticeably.
Based on 30-year climate normals (1991 to 2020), May in Lima averages 23°C by day and 18°C overnight, a range that places it firmly in the warmer tier of the annual calendar. The month records approximately 11 sunshine hours per day and 1mm of total rainfall across 0 wet days, giving it a sunshine-to-rain ratio that is decidedly favourable for outdoor travel.
23°C
Avg High
18°C
Avg Low
0 days
Rain Days
11h
Sunshine
82%
Humidity
Temperature in Lima in May
The narrow 5°C gap between daytime and overnight temperatures, characteristic of coastal cities with maritime moderation, means a single mid-layer works across the whole day. At 82% humidity, the 23°C daytime high feels 2-4°C warmer in practice: quick-dry fabrics and shade-seeking between noon and 3pm are the sensible response. The UV index of 3 is low, meaning sun exposure is minimal concern and sunscreen is largely optional. Winds are calm at an average 14 km/h, so wind-chill is not a factor in planning your clothing. In Fahrenheit: 73°F average high, 64°F overnight low. Data sourced from Open-Meteo ERA5 climate reanalysis (1991–2020 normals).
Temperature in May
Monthly Precipitation (mm)
What to Wear in Lima in May
Packing for Lima in May means dressing for 23°C days and 18°C evenings. A light cotton tee with a casual overshirt works well at 23°C, the overshirt doubles as a layer for air-conditioned venues. Evening temperatures settle at 18°C, a modest 5°C drop that a light cardigan or denim jacket covers. Comfortable walking trainers are the versatile choice for both outdoor sightseeing and indoor venues. At 82% average humidity, quick-dry synthetic or bamboo fabrics dry overnight and stay comfortable longer than cotton.
Local tip: Layers are more practical than a single heavy garment in Lima. The day-to-evening temperature shift rewards packing a versatile mid-layer you can add or remove as conditions change.
Events in Lima in May
May has no major festivals or public holidays in Lima, 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 Lima in May
Based on 23°C average highs and 0 rainy days
- Light layers for morning and evening
- Breathable T-shirts and comfortable trousers
- UV-protective sunglasses
- 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 Lima in May
- Explore outdoor markets and street food stallsMid-morning (10am-12pm)At 23°C, the temperature is ideal for extended walking without overheating
- Guided walking tour of the historic centreMorning or late afternoonComfortable temperatures allow several hours on foot without fatigue
- Visit rooftop viewpoints and observation decksGolden hour (1 hour before sunset)Warm clear evenings provide exceptional visibility for panoramic photography
- Day trip to the surrounding countryside or coastFull day (depart by 8am)May is reliably dry enough for rural day trips without weather risk
- 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
- Try the seasonal farmer's market for local produce and street foodSaturday morning markets typically 8am-1pmMay seasonal produce is at peak availability, offering dishes not found at other times of year
Why is Lima mild in May?
In May, Lima sits in the dry season corridor, as the ITCZ shifts away from the region and trade winds bring drier, more stable air. This produces reliably sunny days reaching 23°C, with lower humidity than the wet months. Overnight lows of 18°C offer a pleasant reprieve from the midday heat. 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: Lima in May
May ranks 7th sunniest of the year in Lima, with an average 11 daily sunshine hours. The driest months are May, June, and July. January is the hottest month (26°C avg high); August is the coolest (20°C). From here, temperatures fall 2°C into June. Compared to last month (April: 25°C high, 2 rain days), May is cooler and drier. May sits in the middle of the annual sunshine ranking for Lima, offering a reasonable balance of good weather and manageable crowds.
Year-Round Climate
| Month | High | Low | Rain Days | Sun | Details |
|---|---|---|---|---|---|
| January | 26°C | 20°C | 4 | 11h | View |
| February | 26°C | 21°C | 8 | 10h | View |
| March | 26°C | 21°C | 7 | 11h | View |
| April | 25°C | 19°C | 2 | 11h | View |
| May | 23°C | 18°C | 0 | 11h | View |
| June | 21°C | 16°C | 0 | 11h | View |
| July | 21°C | 15°C | 0 | 11h | View |
| August | 20°C | 15°C | 0 | 11h | View |
| September | 21°C | 15°C | 0 | 12h | View |
| October | 22°C | 16°C | 0 | 12h | View |
| November | 23°C | 17°C | 1 | 12h | View |
| December | 24°C | 19°C | 2 | 11h | View |
Plan Your Trip to Lima
Data Sources for Lima
Climate normals represent 30-year averages (1991-2020). Individual years may vary.