Trieste weather in June
In June, Trieste has daytime highs averaging 25 °C, nights around 17 °C, with 12 wet days, and a sea temperature of 23 °C. Figures are 1991–2020 climate normals.
- 24.8°C Average high
- 16.5°C Average low
- 12days Wet days
- 107mm Rainfall
- 22.5°C Sea temperature
- 16h Daylight
Daily temperatures through June
How June develops
Averages for the first, middle and last part of the month, from daily 1991–2020 normals. Chance of rain is the share of years in which that calendar day recorded more than 1 mm.
| Days | Avg high | Avg low | Chance of rain |
|---|---|---|---|
| 1–10 June | 23.5 °C | 15.2 °C | 43 % |
| 11–20 June | 24.9 °C | 16.6 °C | 41 % |
| 21–30 June | 26.0 °C | 17.5 °C | 32 % |
- Average highs rise from 23.5 °C early in June to 26.0 °C by the end of it.
- Rain is most likely over days 1–10 of June (43 % of days) and least likely over days 21–30 (32 %).
What to expect
| Measure | Typical June | Share of the month |
|---|---|---|
| Days above 25 °C | 14 of 30 | 47 % |
| Days above 30 °C | 2.5 of 30 | 8 % |
| Days below 0 °C | 0 of 30 | 0 % |
| Days with more than 1 mm rain | 12 of 30 | 38 % |
Conditions in June
| Measure | Average |
|---|---|
| Mean temperature | 21 °C |
| Record high (1991–2020) | 36 °C |
| Record low (1991–2020) | 8.3 °C |
| Relative humidity | 72 % |
| Wind speed | 15 km/h |
| Cloud cover | 50 % |
Where Trieste ranks in June
| Ranking | Position | Value |
|---|---|---|
| Warmest sea temperatures in Europe in June | 9thof 50 | 23 °C |
| Best beach destinations in Europe in June | 41stof 50 | 75/100 |
June compared with the months around it
| Month | Avg high | Rainfall | Cloud |
|---|---|---|---|
| April | 16.4 °C | 107 mm | 56 % |
| May | 20.7 °C | 120 mm | 56 % |
| June | 24.8 °C | 107 mm | 50 % |
| July | 27.4 °C | 88 mm | 42 % |
| August | 27.7 °C | 111 mm | 41 % |
See all twelve months for Trieste
- June is the 3rd warmest month here.
- It is the 6th driest month of the year.
- It ranks 3rd for least cloud cover.
- Days last about 16 hours from sunrise to sunset.
- It rains on 12 of 30 days — 38 % of the month.
- Nights are about 8.3 °C cooler than the middle of the day.
- The hottest June day on record since 1991 reached 36 °C, 11 °C above the usual daytime high.
- Beach score: 75 / 100 — see how this is calculated.
Nearby destinations in June
| Destination | Avg high | Wet days | Sea |
|---|---|---|---|
| Trieste | 25 °C | 12 | 23 |
| Ljubljana | 23 °C | 13 | – |
| Padua | 26 °C | 10 | – |
| Zagreb | 25 °C | 11 | – |
QuestionsJune in Trieste, answered
How warm is Trieste in June?
Daily highs average 25 °C and nights fall to about 17 °C, a spread of 8.3 °C between afternoon and dawn. That makes June the 3rd warmest month of the year here.
Does it rain much in Trieste in June?
June averages 107 mm of rain, spread over about 12 of the 30 days — 38 % of the month. Cloud cover averages 50 % of the sky.
Is the sea warm enough to swim in June?
The sea averages 23 °C off Trieste in June. Most people find water below 20 °C bracing and above 25 °C comfortable for a long swim; this figure is a monthly surface average, so a sheltered bay on a still afternoon can be warmer.
How long are the days in June?
Trieste averages 16 hours between sunrise and sunset in June. Day length is computed from latitude and date, so it is exact rather than modelled — but it says nothing about how much of that time is sunny.
Data sources and method
- ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
- Open-Meteo — Open-Meteo.com. CC BY 4.0
- NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
- GeoNames — GeoNames.org. CC BY 4.0
- Normal period
- 1991–2020
- Dataset version
- era5-1991-2020-scores1.1
- Last processed
Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: daylight hours, beach and comfort scores, monthly rankings, threshold day counts, chance of a wet day by date, ten-day averages within the month. Full formulas are on the methodology page.
Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.