Trieste Climate by Month
Trieste, Friuli Venezia Giulia, Italy
Warm summers and cool winters, with rain spread through the year.
Trieste has warm summers and cool winters, with rain spread through the year. Afternoon highs range from 47°F (8°C) in January to 85°F (29°C) in July, and January nights average 38°F (4°C). About 40 in (1015 mm) of rain falls in a typical year, with no clear rainy season.
- Warmest month
- 85°F(29°C)
- Average high, July
- Coldest nights
- 38°F(4°C)
- Average low, January
- Rain per year
- 40 in(1015 mm)
- No clear rainy season
- Humidity
- 65%
- Sunniest: July
Best and worst months in Trieste
Best for weatherMay and September are the best time for weather in Trieste: highs near 74°F (23°C) and about 3.9 in (100 mm) of rain a month.
Least pleasantDecember and January are the least pleasant; December is the coldest, with highs of only 49°F (10°C).
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in May.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Trieste weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 47°F(8°C) | 38°F(4°C) | 2.2 in(57 mm) | 64% | 1.2 |
| FebFebruary | 49°F(10°C) | 39°F(4°C) | 2.4 in(60 mm) | 61% | 2.0 |
| MarMarch | 56°F(13°C) | 43°F(6°C) | 2.5 in(64 mm) | 66% | 3.0 |
| AprApril | 64°F(18°C) | 50°F(10°C) | 2.8 in(71 mm) | 63% | 4.4 |
| MayMayBest | 73°F(23°C) | 58°F(15°C) | 3.3 in(84 mm) | 65% | 5.5 |
| JunJune | 81°F(27°C) | 65°F(19°C) | 3.0 in(75 mm) | 61% | 6.1 |
| JulJuly | 85°F(29°C) | 69°F(21°C) | 2.6 in(65 mm) | 60% | 6.3 |
| AugAugust | 85°F(29°C) | 70°F(21°C) | 3.3 in(85 mm) | 63% | 5.4 |
| SepSeptemberBest | 75°F(24°C) | 62°F(17°C) | 4.6 in(116 mm) | 68% | 3.9 |
| OctOctober | 66°F(19°C) | 55°F(13°C) | 4.6 in(118 mm) | 67% | 2.4 |
| NovNovember | 57°F(14°C) | 48°F(9°C) | 4.9 in(125 mm) | 74% | 1.3 |
| DecDecember | 49°F(10°C) | 40°F(5°C) | 3.7 in(95 mm) | 69% | 1.0 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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