Climate and monthly weather forecast
Saint Roman, Monaco

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The climate of Saint Roman

Saint Roman, located in Monaco, boasts a Mediterranean climate with warm summers, classified under the Köppen climate type of Csb. A general observation indicates that the weather throughout the year is mild with distinct changes evident among the four seasons. The varying weather parameter magnify the beauty of the area, contributing to its tourism allure.

Temperatures in Saint Roman range from 4.7°C (40.5°F) to 23.9°C (75°F), providing a moderately warm environment. Maximum temperatures peak in August at 23.9°C (75°F), while the winter months experience the lowest temperatures with February recording a mean low of 4.7°C (40.5°F).

Rainfall averages are the highest in November with 127mm (5"), and the lowest in February, with 34mm (1.34"). The number of rainfall days tend to peak in May, with an average of 18.9 days, and are at the lowest in January and December, with approximately nine to ten days of rainfall. This uneven distribution of rainfall suggests the existence of wet and dry seasons.

Saint Roman experiences low levels of snowfall, with most of it occurring in February, where 10mm (0.39") is recorded. However, snowfall days remain low all-year-round, hardly exceeding half a day on average. The daylight duration fluctuates throughout the year, with June enjoying the longest days at 15.4 hours, and December experiencing the shortest with nine hours.

Wind speeds tend to vary, with the highest wind gusts felt in April and November at 20.7km/h (12.9mph) and 20.2km/h (12.6mph), respectively. Lower speeds are often experienced during August with gusts reaching 12.7km/h (7.9mph).

The best time to visit Saint Roman

For tourists seeking warmer climates and longer days, the ideal time to visit Saint Roman is between May to September. During these months, temperatures average between at 16.9°C (62.4°F) to 23.9°C (75°F), and daylight stretches over 14 hours. This period also witnesses lower wind speeds, boosting the comfort for outdoor activities and exploration of the local sights.

The worst time to visit Saint Roman

For those preferring to steer clear of heavy rains and relatively colder temperatures, a visit to Saint Roman is best avoided from October to March. November witnesses heavy showers with rainfall edging up to 127mm (5"). Meanwhile, February can be on the chiller side, with temperatures potentially dropping to as low as 4.7°C (40.5°F).

Spring weather in Saint Roman

Springtime in Saint Roman can be a delightful mix of mild weather conditions. March, April, and May have average high temperatures ranging from 11.3°C (52.3°F) to 16.9°C (62.4°F) and lows fluctuating from 6.9°C (44.4°F) to 12.5°C (54.5°F). Rainfall sits around 53mm (2.09") to 71mm (2.8") with up to almost 19 days of rain in May. Wind gusts maintain a steady pace, hovering around the range of 20.7km/h (12.9mph) in April.

Summer weather in Saint Roman

Summers in Saint Roman, from June to August, offer warm days with average high temperatures jumping from 21°C (69.8°F) to 23.9°C (75°F), and lows between 16.2°C (61.2°F) and 19.2°C (66.6°F). Rainfall lessens compared to Spring, with figures varying from 45mm (1.77") to 77mm (3.03"). The season also garners the most hours of daylight — up to 15.4 hours in June.

Autumn weather in Saint Roman

During the autumn months of September, October, and November, temperatures descend gradually from 20.7°C (69.3°F) to 13.1°C (55.6°F), while the minimum temperatures can dwindle from 16.2°C (61.2°F) to 9.4°C (48.9°F). Rainfall spikes again during this period, particularly in November with 127mm (5"), the most significant downpour of the year.

Winter weather in Saint Roman

Winters in Saint Roman bring cooler temperatures, with highs varying from 10.3°C (50.5°F) in December to 8.8°C (47.8°F) in January and February. The coldest months can see temperatures decline to 4.7°C (40.5°F). This season also experiences the least hours of daylight, down to nine hours in December. Snowfall is practically absent, except for traces in February around 10mm (0.39"). Wind gusts remain close to 20km/h (12.4mph) during these months, adding frigid gusts to the chilly ambiance.

Weather in January

As possessor of the lowest high temperature, January in Saint Roman, Monaco, offers an average of 8.8°C (47.8°F) at peak times during the day. This month showcases cooler temps, with these wintery conditions being persistently felt until February. Weather in January »

Weather in February

While the frigid temperatures persist from January, February sees an increase in snowfall to 10mm (0.39"), turning Saint Roman into a winter haven. In comparison, the colder days are lingering, but the transition to the more temperate spring season is on the horizon. Weather in February »

Weather in March

March ushers in mild weather in Saint Roman, with the average high temperature climbing to 11.3°C (52.3°F). This warming trend heralds the incoming spring. An increase in daylight hours is noticeable, offering more opportunities to enjoy some outdoor activities. Weather in March »

Weather in April

April in Saint Roman marks an increase in average temperatures to 14°C (57.2°F), signaling the arrival of milder spring conditions. Landscape around the city begins to exhibit vibrant hues of spring. Rain persists, but it is balanced with more exposure to sunlight. Weather in April »

Weather in May

As spring evolves into summer, May in Saint Roman witnesses an increase in average high temperature to 16.9°C (62.4°F), complemented by a significant rise in humidity levels to 75%. The city starts to warm up, inviting more outdoor activities under the longer daylight hours. Weather in May »

Weather in June

June sees a recognizable shift towards summer, with Saint Roman’s average high temperature increasing pleasantly to 21°C (69.8°F). While the humidity stays constant from May, the city basks in more hours of sunshine. Precipitation continues to grace the city, but rainfall is balanced with ample sunlight. Weather in June »

Weather in July

July in Saint Roman is the epitome of summer with an average high temperature escalating to a warm 23.7°C (74.7°F). Stifling humidity dials back, making way for more agreeable conditions. Rainfall diminishes from June’s levels, and longer durations of sunshine are enjoyed. Weather in July »

Weather in August

August maintains July’s high temperature, with the average peaking at 23.9°C (75°F), marking it as the warmest month in Saint Roman. While temperature remains stable, there is a noticeable drop in rain days. The daily lives of people are seldom disrupted by rain, as the majority of the month is marked by clear, sunny days. Weather in August »

Weather in September

The arrival of September heralds a drop in the average high temperature to 20.7°C (69.3°F), signaling the onset of autumn in Saint Roman. Despite the dwindling temperature, the majority of the days are bathed in sunshine. Rainfall increases, indicating the transition from the warm, dry summer to cooler, damper autumn. Weather in September »

Weather in October

October ushers in cooler weather with average high temperatures dropping to 17.3°C (63.1°F), a notable decrease from September’s warmth. Rainfall becomes frequent, and the autumn chill is more apparent each day. Despite shorter durations of sunlight, the city receives a fair amount of sunshine. Weather in October »

Weather in November

November in Saint Roman witnesses the highest average rainfall, reaching 127mm (5"), making it the month with the most precipitation. The march towards winter is solidified, indicated by the descending temperatures. Such increased rainfall makes for predominantly overcast days. Weather in November »

Weather in December

In December, Saint Roman embraces winter wholly, with an average high temperature dropping to 10.3°C (50.5°F). Despite the presence of winter chill, rainfall begins to reduce from the highs of November. Sunlight hours decrease, signifying shorter days and longer nights. Weather in December »

Frequently asked questions

What time of the year is the coldest in Saint Roman?

The lowest level of Saint Roman's temperatures is noted during January and February, averaging a high-temperature of 8.8°C (47.8°F).

What is the least humid month in Saint Roman?

January and December, with an average relative humidity of 69%, are the least humid months.

What is the driest month in Saint Roman?

January is the month with the least rainfall. Rain falls for 10.3 days and accumulates 34mm (1.34") of precipitation.

How much does it rain in Saint Roman?

Throughout the year, in Saint Roman, Monaco, there are 163.9 rainfall days, and 765mm (30.12") of precipitation is accumulated.

When does it snow in Saint Roman?

January through March are months with snowfall in Saint Roman, Monaco.

How many days does it snow in Saint Roman?

In Saint Roman, during the entire year, snow falls for 0.9 days and aggregates up to 14mm (0.55") of snow.

What is the month with the least sunshine in Saint Roman?

The months with the least sunshine in Saint Roman are January, November and December, with an average of 6.4h of sunshine.

When is the lowest UV index in Saint Roman?

January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index in Saint Roman, Monaco.

What is the snowiest month in Saint Roman?

February is the month with the most snowfall. Snow falls for 0.5 days and accumulates 10mm (0.39") of snow.

When it does not snow in Saint Roman?

April through December are months without snowfall.

What are the most humid months in Saint Roman?

May and June, with an average relative humidity of 75%, are most humid months.

When are the longest days in Saint Roman?

With an average of 15h and 24min of daylight, June has the longest days of the year.

When is the highest UV index in Saint Roman?

The months with the highest UV index are June and July, with an average maximum UV index of 6.

What month has the most sunshine in Saint Roman?

With an average of 11.9h of sunshine, July has the most sunshine of the year in Saint Roman, Monaco.

What are the warmest months in Saint Roman?

August, noted for its average high-temperature of 23.9°C (75°F) and an average low-temperature of 19.2°C (66.6°F), is considered the warmest month.

When is Daylight Saving Time (DST) in Saint Roman?

On Sunday, 27. October 2024, at 03:00, Daylight Saving Time ends in Saint Roman, and the time zone changes from CEST to CET. The next Daylight Saving Time starts on Sunday, 30. March 2025, at 02:00, and the time zone reverts from CET to CEST.

What is the wettest month in Saint Roman?

November is the month with the most rainfall in Saint Roman. Rain falls for 12.4 days and accumulates 127mm (5") of precipitation.

What is the month with the shortest days in Saint Roman?

The month with the shortest days in Saint Roman, Monaco, is December, with an average of 9h and 0min of daylight.

Average temperature
Saint Roman, Monaco

Average temperature - Saint Roman, Monaco

The warmest month (with the highest average high temperature) is August (23.9°C).
The months with the lowest average high temperature are January and February (8.8°C).

The month with the highest average low temperature is August (19.2°C).
The coldest month (with the lowest average low temperature) is February (4.7°C).

Average pressure
Saint Roman, Monaco

Average pressure - Saint Roman, Monaco

The month with the highest atmospheric pressure is December (1018.4mbar).
The month with the lowest atmospheric pressure is April (1013.9mbar).

Average wind speed
Saint Roman, Monaco

Average wind speed - Saint Roman, Monaco

The windiest month (with the highest average wind speed) is March (13.1km/h).
The calmest month (with the lowest average wind speed) is August (8.3km/h).

Average humidity
Saint Roman, Monaco

Average humidity - Saint Roman, Monaco

The months with the highest relative humidity are May and June (75%).
The months with the lowest relative humidity are January and December (69%).

Average rainfall
Saint Roman, Monaco

Average rainfall - Saint Roman, Monaco

The wettest month (with the highest rainfall) is November (127mm).
The driest month (with the least rainfall) is January (34mm).

Average rainfall days
Saint Roman, Monaco

Average rainfall days - Saint Roman, Monaco

The month with the highest number of rainy days is May (18.9 days).
The month with the least rainy days is December (9.1 days).

Average snowfall
Saint Roman, Monaco

Average snowfall - Saint Roman, Monaco

The month with the highest snowfall is February (10mm).
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0mm).

Average snowfall days
Saint Roman, Monaco

Average snowfall days - Saint Roman, Monaco

The month with the highest number of snowfall days is February (0.5 days).
The months with the least snowfall days are April, May, June, July, August, October and November (0 days).

Average daylight / Average sunshine
Saint Roman, Monaco

Average daylight / Average sunshine - Saint Roman, Monaco

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

The month with the most sunshine is July (Average sunshine: 11h and 54min).
The months with the least sunshine are January, November and December (Average sunshine: 6h and 24min).

Average sunshine days
Saint Roman, Monaco

Average sunshine days - Saint Roman, Monaco

The month with the most sunshine days is December (19.4 days).
The month with the least sunshine days is May (7.3 days).

Average UV index
Saint Roman, Monaco

Average UV index - Saint Roman, Monaco

The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).

Average visibility
Saint Roman, Monaco

Average visibility - Saint Roman, Monaco

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).

Saint Roman, Monaco

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