The best times to visit Ostia for ideal weather are

April 2nd to July 8th


August 27th to November 18th

based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.



Other Ostia Travel Info

Weather in Ostia


Average temperatures in Ostia vary greatly. Considering humidity, temperatures feel nice most of the year, excluding some cold weeks in the winter, with a low chance of precipitation most of the year. The area is somewhat temperate — in the 45th percentile for pleasant weather — compared to tourist destinations worldwide. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit Ostia, the hottest months are August, July, and then June. See average monthly temperatures below. The warmest time of year is generally early to mid August where highs are regularly around 87.5°F (30.8°C) with temperatures rarely dropping below 66.1°F (18.9°C) at night.

Ostia Temperatures (Fahrenheit)


Ostia Temperatures (Celsius)


“Feels-Like” Temperatures

The way we experience weather isn’t all about temperature. Higher temperatures affect us much more at higher humidity, and colder temperatures feel piercing with high winds. Our perceived temperatures factor in humidity and wind chill to better represent how hot or cold the day feels to a person.

Ostia Perceived Temperature (F)


Ostia Perceived Temperature (C)



Average Ostia Temperatures by Month

Daily highs (averaged for the month) usually give the best indication of the weather. A significantly lower mean and low generally just means it gets colder at night.

Show Fahrenheit

Month Avg. High (°F) Avg. Mean (°F) Avg. Low (°F)
Jan 56.1 47.9 39.7
Feb 56.2 47.6 38.7
Mar 60.9 52.4 43.2
Apr 67.3 58.1 47.8
May 73.9 64.3 53.6
Jun 80.6 71.6 60.9
Jul 85.4 76.4 65.4
Aug 86.5 76.8 65.8
Sep 79.8 70.4 61
Oct 72.8 63.1 54
Nov 64.9 56.1 48.2
Dec 57.4 48.7 40.6

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 13.4 8.8 4.3
Feb 13.4 8.7 3.7
Mar 16.1 11.3 6.2
Apr 19.6 14.5 8.8
May 23.3 17.9 12
Jun 27 22 16.1
Jul 29.7 24.7 18.6
Aug 30.3 24.9 18.8
Sep 26.6 21.3 16.1
Oct 22.7 17.3 12.2
Nov 18.3 13.4 9
Dec 14.1 9.3 4.8



Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Ostia are August, July, and then June. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around late June. For example, on the week of June 25th there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in late January and early February with an average of 2 days of significant precipitation the week of January 29th.

When can you find snow in Ostia? Weather stations report no annual snow. Please note that a value of 0 for snow in the graph below may either mean there was no snow, or that snow is unreported.

Chance of Precipitation

The graph below shows the % chance of rainy and snowy days in Ostia.

Days with precipitation

Snow on the Ground

The graph below shows the average snow on the ground in Ostia (in).

Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 22% 0 3.1
Feb 24% 0 3.3
Mar 19% 0 3.1
Apr 12% 0 1.6
May 12% 0 1.3
Jun 6% 0 1.1
Jul 4% 0 0.5
Aug 3% 0 0.8
Sep 12% 0 1.9
Oct 14% 0 2.8
Nov 27% 0 4.7
Dec 19% 0 3.1

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 22 0 7.9
Feb 24 0 8.4
Mar 19 0 7.9
Apr 12 0 4.1
May 12 0 3.3
Jun 6 0 2.8
Jul 4 0 1.3
Aug 3 0 2
Sep 12 0 4.8
Oct 14 0 7.1
Nov 27 0 11.9
Dec 19 0 7.9


Humidity and Wind

Ostia has some very humid months, and above average humidity throughout the year. The least humid month is August (60% relative humidity), and the most humid month is November (71.1%).

Wind in Ostia is usually moderate. The windiest month is March, followed by February and December. March’s average wind speed of around 7.8 knots (8.9 MPH or 14.4 KPH) is considered “a gentle breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in early February where average top sustained speeds reach 15.3 knots, which is considered a moderate breeze.

Relative Humidity (%)

The graph below shows the average % humidity by month in Ostia.

Avg. Relative Humidity


The graph below shows wind speed (max and average) in knots.

Max Sustained Wind
Average Daily Wind

Average Wind Speeds

Show Wind Speeds

All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.

Month Avg. Wind Avg. Wind Feel Sustained High Wind High Wind Feel
Jan 7 Gentle breeze 12.8 Significant breeze
Feb 7.7 Gentle breeze 14.2 Significant breeze
Mar 7.8 Gentle breeze 14.2 Significant breeze
Apr 6.8 Light breeze 13.1 Significant breeze
May 6.8 Light breeze 13.5 Significant breeze
Jun 6.9 Light breeze 13.8 Significant breeze
Jul 6.7 Light breeze 13.3 Significant breeze
Aug 6.4 Light breeze 13 Significant breeze
Sep 6.9 Light breeze 13.2 Significant breeze
Oct 6.6 Light breeze 12.3 Significant breeze
Nov 7.2 Gentle breeze 13 Significant breeze
Dec 7.3 Gentle breeze 13 Significant breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 70.3%
Feb 64.8%
Mar 66.1%
Apr 66.6%
May 63.2%
Jun 61.7%
Jul 60.1%
Aug 60%
Sep 61.1%
Oct 66.8%
Nov 71.1%
Dec 68.4%


Is it Safe to Travel to Ostia?

Our best data indicates this area is generally safe. As of Oct 07, 2019 there are no travel advisories or warnings for Italy; exercise normal security precautions. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories. This advisory was last updated on Aug 22, 2019.


The Busiest and Least Crowded Months

The busiest month for tourism in Ostia, Italy is January, followed by February and March. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit Ostia in December. Those willing to visit at these times will likely find it the least expensive month.

Estimated Tourism by Month


Most Popular Months to Visit

Tourists Seeking Accommodations

Tourism graph is based on Google searches for services used by tourists relative to the rest of the year. Tourism data for this area is slightly extrapolated based on nearby areas. Displayed data is calculated relative to the peak, so a score of 53.8 in December means 53.8% of the tourists vs. January.



Overall Ostia Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel moderate. Highs range from 76.6°F (24.8°C) and 58.9°F (14.9°C) with warmer temperatures in the later months. Rain is somewhat common with 4 to 6 days of significant precipitation per month. Spring is the busiest for tourism, which makes it a good time for those looking for things to do.

Summer (June through August)

The middle-year months have very comfortable weather with high temperatures that are quite warm. These months see the least precipitation with 1 to 2 days of precipitation per month. June – August is fairly slow season for tourism in Ostia, so lodging and other accommodations may cost slightly less.

Fall (September through November)

Fall daily highs range from 82.1°F (27.8°C) and 60.8°F (16°C), which will feel comfortable given the humidity and wind. It rains or snows a significant amount: 3 to 8 days per month. Tourism is the slowest during these months due to the weather, so hotels may be affordably priced.

Winter (December through February)

Weather is too cold this time of year in Ostia to be enjoyable for warm weather travelers. The average high during this season is between 59.4°F (15.2°C) and 53.8°F (12.1°C). On average, it rains or snows a fair amount: 6 to 7 times per month. These times of year are the second busiest with tourists.


Best Times to TravelItaly › Ostia, Italy