Monaco Monaco Weather in May — Climate Guide
May in Monaco is high
Monaco Weather in May — Quick Answer
As of 2026- Avg temp
- 21° / 14°
- Rainfall
- 50mm · 5 days
- Crowds
- Busy
As of 2026, Monaco in May averages a high of 21°C and low of 14°C with 50mm of rain over about 5 days. Warm late spring — around 21°C/14°C, plenty of sun. Light clothing by day, a light layer for evenings. SPF and sunglasses for strong UV. Early-season swimming possible.
May is high for Monaco.
May brings warm, reliably sunny weather around 21°C/14°C — arguably the finest month on the Riviera, with the sea warming enough (~18°C) for early swims and the gardens in full bloom.
Be aware of two big regional events: the Cannes Film Festival (mid-May, a short train west) spikes hotel prices across the coast, and the Monaco Grand Prix — which traditionally ran in late May — has moved to early June in 2026, so May is now the build-up rather than the race itself. Check current-year dates before booking.
Travel score
Monaco May Weather Stats
Avg High
21°C
Avg Low
14°C
Rainy Days
5
50mm total
Sunshine
8h
Daily avg
Humidity
70%
comfortable
UV Index
7
High
Wind
10 km/h
Gusts 20
Sea Temp
18°C
Avg water temp
Crowds
Busy
At attractions
May Sunrise & Sunset
Air Quality
PM2.5
18 μg/m³
PM10
32 μg/m³
Status
good
Feels-Like Temperature & Wind
Feels like
Daytime
22°C
Nighttime
14°C
Humidity and wind affect how the actual temperature feels.
Wind
10 km/h
Max gust 20 km/h
Activities Recommended for May
May Travel Pros & Cons
Pros
- Warm, sunny, low-rain weather
- Sea warm enough for early swims (~18°C)
- Gardens in bloom
- Excellent for Riviera day trips
Cons
- High prices (Cannes Film Festival spikes the coast)
- Crowds building toward summer
- Grand Prix build-up congestion (race now early June)
May Events & Festivals
- Cannes Film Festival (mid-May) — a short train away, spikes regional prices
- Spring weather at its best — warm and sunny
- Pre-Grand-Prix build-up (race moved to June in 2026)
Monaco in May — Full Picture
May brings warm, reliably sunny weather around 21°C/14°C — arguably the finest month on the Riviera, with the sea warming enough (~18°C) for early swims and the gardens in full bloom.
Be aware of two big regional events: the Cannes Film Festival (mid-May, a short train west) spikes hotel prices across the coast, and the Monaco Grand Prix — which traditionally ran in late May — has moved to early June in 2026, so May is now the build-up rather than the race itself. Check current-year dates before booking.
Monaco is glorious now: warm enough for the harbour and Larvotto, sunny for the circuit walk and the old town, and lively without August's heat. Pairing with Èze, Menton, and Nice is at its best.
Note: prices are high and rising into summer; book accommodation early, especially around the Cannes festival fortnight.
What to Wear & What to Pack
Warm late spring — around 21°C/14°C, plenty of sun. Light clothing by day, a light layer for evenings. SPF and sunglasses for strong UV. Early-season swimming possible.
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
Current17.7°C
11.3°C
5.7/mo
Summer (Jun·Jul·Aug)
27°C
20.3°C
3/mo
Autumn (Sep·Oct·Nov)
21°C
15°C
6.3/mo
Winter (Dec·Jan·Feb)
13.3°C
8.3°C
6.3/mo
Monaco Monthly Weather Comparison
| Month | High | Low | Rain | Sun | Humid | UV | Crowd | Price |
|---|---|---|---|---|---|---|---|---|
| 13° | 8° | 7d·75mm | 5h | 70% | 2 | Quiet | Low season | |
| 13° | 8° | 6d·70mm | 6h | 70% | 2 | Quiet | Low season | |
| 15° | 9° | 6d·70mm | 6.5h | 68% | 4 | Moderate | Shoulder | |
| April (Best) | 17° | 11° | 6d·70mm | 7.5h | 68% | 5 | Busy | Peak |
| May (Best) | 21° | 14° | 5d·50mm | 8h | 70% | 7 | Busy | Peak |
| 25° | 18° | 4d·40mm | 9.5h | 70% | 9 | Very busy | Peak | |
| 28° | 21° | 2d·25mm | 10.5h | 70% | 10 | Very busy | Peak | |
| 28° | 22° | 3d·30mm | 10h | 70% | 9 | Very busy | Peak | |
| September (Best) | 25° | 19° | 5d·65mm | 8h | 70% | 7 | Busy | Peak |
| 21° | 15° | 7d·110mm | 6.5h | 72% | 4 | Moderate | Shoulder | |
| 17° | 11° | 7d·135mm | 5h | 73% | 2 | Quiet | Low season | |
| 14° | 9° | 6d·85mm | 5h | 71% | 2 | Moderate | Shoulder |
View Other Months
Monaco May Hotel Picks
Frequently Asked Questions
Is May a good time to visit Monaco?
Monaco in May is high. Tourist crowds are busy and flight/hotel prices are peak.
What's the average temperature in Monaco in May?
Monaco May averages a high of 21°C and a low of 14°C.
Does it rain much in Monaco in May?
Monaco May averages 50mm of rainfall over about 5 rainy days.
What should I wear in Monaco in May?
Warm late spring — around 21°C/14°C, plenty of sun. Light clothing by day, a light layer for evenings. SPF and sunglasses for strong UV. Early-season swimming possible.
What time are sunrise and sunset in Monaco in May?
Monaco May sunrise is 06:10 and sunset is 20:45, with 14h 35min of daylight.
What's the air quality like in Monaco in May?
Monaco May air quality (AQI) averages 46, rated Good. PM2.5 averages 18μg/m³.
What activities are recommended in Monaco in May?
In May, Monaco is great for Larvotto beach (early season), Casino, Oceanographic Museum, old town, Èze, Menton & Nice day trips.
Is May peak season in Monaco?
Monaco May crowds are busy and prices are peak. Advance reservations are strongly recommended.
Best Months to Visit Monaco
View Other Months
Planning a May trip to Monaco?
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Why you can trust weather guide
Based in Chiang Mai for 8+ years, with 30+ countries visited across Southeast Asia, Japan, and Europe. Every detail in this guide is primary-source verified as of April 2026, with prices auto-refreshed via live exchange rate APIs. This isn't AI-generated boilerplate — it's written from the perspective of someone who has actually been there.