When I would go to Monaco, month by month with the calendar in front of me

You can go to Monaco in any month, and what makes or breaks the trip is usually the calendar rather than the weather. A race weekend changes the experience far more than a couple of degrees either way. So this page combines the two, each month’s average climate and what is happening in the city, and ends with my opinion, which is just that, an opinion. If what you want is the weather itself, month by month, it has its own page in Monaco weather.

When is the best time to visit Monaco?

My pick is the first half of September. Average highs are around 24 °C and lows around 18 °C, the sea is about 22 °C, and the racing grandstands and barriers have gone, taken down by 17 July in 2026. The Palace stays open inside until mid-October, and guided tours of the Stade Louis II run until 30 September. At the end of the month the yacht show arrives, from 23 to 26 September in 2026, and I would give the harbour a miss on those days.

My second choice would be June, dodging the race days, or July from the middle of the month. They are the sunniest months, with 281 and 329 hours on average, and the sea is already above 21 °C. If the beach comes first for you, Monaco’s beaches are at their best in July and August.

What the table tells you and what it does not

I want to be straight about the data. The monthly table I use comes from a secondary source, 1981-2010 averages attributed to Météo-France and collected on English Wikipedia, with sea temperatures from Weather Atlas. Monaco’s statistics institute publishes the 1991-2020 normals only as a chart, with no figures I can copy, so the table is for comparing months, not for promising you particular weather.

What the institute does publish is actual data by year, and it shows how changeable things are. In 2023, 436.4 mm of rain fell over 46 days, and in 2024 it was 1,016.1 mm over 66 days, more than double. Sunshine dropped that same year from 2,659 hours to 2,059. The Société des Bains de Mer talks of about 60 rainy days a year, over 2,500 hours of sun and an annual average around 16 °C, which squares with the table.

Spring, with grandstands in the streets

From March to May the weather is kind, with highs climbing from 14.9 °C to 20.4 °C, but the city is busy building race circuits. In 2026 the build began on 23 February and the harbour quay did not get its traffic back until 17 July. April brings the Masters tennis and, in even years, the Historic Grand Prix. May has the E-Prix and June, Formula 1. If you are coming for one of those, everything you need is in going to the Monaco Grand Prix and the Monte-Carlo Masters.

If you are not coming for the racing, the date I would most avoid is the Formula 1. That weekend neither the Palace nor the Oceanographic opens, nor the Exotic Garden or the car collection, and a taxi within Monaco goes from €18 to a flat €30. The good side of spring is that the Palace opens its state rooms at the end of March, and the Prince’s Palace is one of the visits that most justify going between March and October.

Summer, warm sea and fireworks

July is the driest month in the table, with 13.7 mm and fewer than two rainy days, and August has the warmest sea, 23.6 °C on average. Average highs top 26 °C, so I would see the Rock and its gardens early in the day. The reward for summer is the free harbour fireworks, on Saturdays 25 July and 1 August in 2026, and the seawater pool at the Stade Nautique Rainier III, with its 2026 season set for 1 May to 7 October.

Autumn and winter, rain, home-grown festivals and Christmas

October is the wettest month, with 128.7 mm on average, and November comes next. In return, this is when Monaco celebrates its own occasions. National Day falls on the 19th, the opera season opens and the Monte-Carlo Jazz Festival plays in the Salle Garnier. December brings the Christmas village at the harbour, and in January the Rally, the Monte-Carlo Circus Festival and Sainte Dévote fall in the same week. It is all laid out month by month in events in Monaco, and the festive season has its own page in Monaco at Christmas.

Winter is mild, with highs of 13 °C, but you have to accept closures. The Palace cannot be toured inside, the stadium runs no tours and the little tourist train stops from mid-November to February. The Exotic Garden, reopened in March 2026, is open all year except on odd days.

The dates when I would not leave the hotel to chance

I have no data on hotel prices by month, and I would rather not make any up. What I do know is which weeks draw the biggest crowds for a reason, and for those I would not leave the booking till last. They are the Formula 1, the Masters tennis week, the E-Prix and the Yacht Show. If your dates coincide, book as soon as you have them, using where to stay in Monaco.