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When is the best time to visit Trieste?
In general the best time to visit Trieste is probably August, when the weather is usually great. The hottest months are June, July, August, while the coldest months are January, February, December.
Depending on the activities you want to experience, you may choose different months to visit:
- The best time for a sunbathing holiday is June, July, August. Average maximum temperatures are up to +29°C in August and it has 14 sunny days on average.
- In general, it’s pleasant to walk and do outdoor activities during May - October.
- If you want to avoid wet weather, then your choice is October, November, December with the lowest chance of rain.
Average weather in Trieste in different months
This is the average weather in Trieste for each month based on historic data:
January, February, March, April, May, June, July, August, September, October, December usually has good weather. Average maximum temperature reaches +29°C during July.
In November the weather is average. Expect around 13 rainy days, and the precipitation amounts to approximately 163 mm in November.
Climate in Trieste
Here is the detailed breakdown of the climate in Trieste for each month:
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Maximum Temperature | |||||||||||
| +17°C | +21°C | +24°C | +28°C | +32°C | +36°C | +39°C | +37°C | +32°C | +30°C | +24°C | +19°C |
| Average Maximum Temperature | |||||||||||
| +9°C | +10°C | +14°C | +17°C | +22°C | +26°C | +29°C | +29°C | +24°C | +19°C | +14°C | +10°C |
| Minimum Temperature | |||||||||||
| -12°C | -12°C | -10°C | -2°C | +6°C | +8°C | +10°C | +8°C | +6°C | -1°C | -4°C | -8°C |
| Avg. water temperature | |||||||||||
| +13°C | +10°C | +12°C | +15°C | +22°C | +26°C | +27°C | +28°C | +26°C | +22°C | +18°C | +15°C |
| Humidity, % | |||||||||||
| 69 | 67 | 65 | 66 | 67 | 67 | 64 | 64 | 67 | 70 | 71 | 70 |
| Rain, mm | |||||||||||
| 81 | 78 | 94 | 103 | 114 | 98 | 72 | 101 | 152 | 156 | 163 | 113 |
| Snow, mm | |||||||||||
| 4 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| Average wind speed, m/s | |||||||||||
| 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 |
| Sunny Days | |||||||||||
| 9 | 9 | 9 | 7 | 7 | 8 | 12 | 14 | 11 | 10 | 7 | 9 |
| Cloud Days | |||||||||||
| 10 | 8 | 9 | 7 | 6 | 6 | 5 | 4 | 5 | 6 | 8 | 9 |
| Rainy Days | |||||||||||
| 11 | 10 | 13 | 15 | 15 | 11 | 8 | 9 | 10 | 13 | 13 | 12 |
| Snowy Days | |||||||||||
| 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Average Temperature
Here are the average maximum and minimum temperatures in Trieste during the whole year:
The hottest month in Trieste is August with average maximum temperature going up to +29°C. The coldest month is January with the lowest temperatures of +3°C.
Water temperature
Here are the water temperatures in Trieste during the whole year:
Trieste achieves its warmest water temperature in August, where the average sea temperature goes up to +25°C. Coldest water temperature is in February with +9°C in average.
When can you swim in Trieste?
You can swim in Trieste from June to September:
- In June - September the water is comfortable (21°C - 25°C);
Humidity
The temperature feels different depending on humidity. Here is how humidity in Trieste looks throughout the year, in %:
The most humid month in Trieste is November with average humidity going up to 71%. The least humid month is July with an average humidity of 64%.
Rain
Amount of rainfall in mm. in Trieste during the whole year based on historical data:
The sunniest and driest month is August with approximately 14 sunny days and a total precipitation of around 101 mm. The rainiest and wettest month is November with approximately 13 rainy days and 163 mm of total precipitation.
Snow
Amount of snow in mm. in Trieste during the whole year based on historical data:
The snowiest month is January with approximately 1 snowy days.
FAQ
Frequently asked questions about the weather in Trieste:
What is the hottest month in Trieste?
The hottest month in Trieste is August with average maximum temperature of +29°C.
What is the coldest month in Trieste?
The coldest month in Trieste is January with minimum temperatures of +3°C.
Is Trieste worth visiting in winter?
If you are planning to visit Trieste in winter you can expect pretty good weather. The best month is August with +29°C and 14 sunny days.
When does it rain the least in Trieste?
if you're looking to visit Trieste when it rains the least, you should plan your trip for November, October, September. During this time, rainfall is rare with the driest month being July with only 72 mm of rain.
Other cities in Italy
Check out the weather for other cities in Italy.
Monthly weather in Trieste
Source of the data
For this page, we’ve looked at the typical weather in Trieste, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.