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Weather in Parnu - 14-day forecast

Detailed weather forecast for Parnu, Estonia: daytime and night temperature, rain, sunrise and sunset - today and for the next two weeks.
Forecast for the next days in Parnu
today🌧️ 15°💧 3.9 mm
Sun🌧️ 16°💧 0.4 mm
Mon☁️ 15°💧 0.5 mm
Tue🌧️ 17°💧 0.3 mm
Wed🌧️ 16°💧 3.4 mm
Thu🌧️ 16°💧 5.5 mm
Fri🌧️ 16°💧 3.3 mm
Sat🌧️ 14°💧 4.2 mm
Forecast vs 1991-2020 climate normal

How does the current forecast compare with normal?

We compare the coming days with weather usually observed at this time of year.

NASA POWER

Saturday 5 Sept in Parnu, the forecast high is 15°C. Typical daytime temperatures at this time of year range from 16°C to 21°C, so it will be cooler than usual. It is cooler than 85% of similar days.

15°Ccooler than usual
usually 16°C–21°C
cooler than 85% of similar days
night: near normal rain: more rain than usual wind: typical
16°Ccooler than usual
usually 16°C–21°C
cooler than 78% of similar days
night: warmer than usual rain: typical rainfall wind: stronger than usual
15°Ccooler than usual
usually 16°C–20°C
cooler than 82% of similar days
night: exceptionally warm rain: typical rainfall wind: typical
17°Cnear normal
usually 15°C–20°C
night: exceptionally warm rain: typical rainfall wind: typical
16°Cnear normal
usually 15°C–20°C
night: exceptionally warm rain: more rain than usual wind: typical
16°Ccooler than usual
usually 15°C–20°C
cooler than 71% of similar days
night: exceptionally warm rain: exceptionally wet wind: exceptionally strong
16°Cnear normal
usually 15°C–19°C
night: exceptionally warm rain: more rain than usual wind: typical

How warm was this week in previous years?

Each bar shows the average daily high during the same 7-day period in each year.

swipe to see more years →
10°20°30° 1981: 17°C1982: 15°C1983: 17°C1984: 15°C1985: 14°C1986: 13°C1987: 15°C1988: 18°C1989: 17°C1990: 15°C1991: 13°C1992: 17°C1993: 13°C1994: 17°C1995: 18°C1996: 13°C1997: 17°C1998: 17°C1999: 22°C2000: 16°C2001: 17°C2002: 22°C2003: 18°C2004: 16°C2005: 19°C2006: 18°C2007: 16°C2008: 16°C2009: 19°C2010: 17°C2011: 18°C2012: 17°C2013: 21°C2014: 20°C2015: 18°C2016: 20°C2017: 17°C2018: 23°C2019: 21°C2020: 17°C2021: 18°C2022: 17°C2023: 20°C2024: 23°C2025: 23°C 2026 forecast: 16°C current forecast 16°C 198119902000201020202026
cooler yearstypical rangewarmer years2026 forecastcurrent forecast

From 1981 to 2025, the 5-11 Sept period averaged 18°C by day. The coolest year was 1991 (13°C) and the warmest was 2024 (23°C). The current forecast averages 16°C - lower than in 78% of historical years.

Historical reference: NASA POWER daily gridded data (MERRA-2), the 1991-2020 normal and a +/- 7-day calendar window. The typical range is the 20th-80th percentile. This is not a city weather-station reading and does not change the current forecast. NASA POWER Daily API.

Weather warnings - Parnu

No active weather warnings for Parnu (region: Pärnumaa). The national weather service is not forecasting dangerous conditions.

14-day forecast - Parnu

Parnu - 14-day weather forecast infographic

Parnu 30 & 45-day weather - long-range outlook

Next 16 days · forecast
15°
around 14° at night · days with rain: 7
Weeks 3-4 · avg for September
17°
around 10° at night · rain chance 18%
Weeks 5-7 · avg for October
10°
around 4° at night · rain chance 17%
The 30 & 45-day outlook for Parnu: the next 16 days are a numerical forecast updated daily - on average 15° by day and 14° at night. Further out we rely on multi-year climate averages: around 17° in September, and about 10° in October. Forecasts beyond two weeks are indicative only.

Day-by-day forecast for Parnu

Saturday5 September 2026
🌧️15°light rain
sunrise 06:29 · sunset 20:12 · night 12° · evening 15° · rain 3.92 mm · humidity 70% · wind 6 m/s · clouds 100%
Sunday6 September 2026
🌧️16°light rain
sunrise 06:31 · sunset 20:09 · night 13° · evening 15° · rain 0.38 mm · humidity 52% · wind 8 m/s · clouds 50%
Monday7 September 2026
☁️15°broken clouds
sunrise 06:33 · sunset 20:06 · night 14° · evening 15° · rain 0.54 mm · humidity 55% · wind 6 m/s · clouds 57%
Tuesday8 September 2026
🌧️17°light rain
sunrise 06:35 · sunset 20:03 · night 17° · evening 18° · rain 0.27 mm · humidity 76% · wind 7 m/s · clouds 85%
Wednesday9 September 2026
🌧️16°light rain
sunrise 06:37 · sunset 20:00 · night 15° · evening 17° · rain 3.38 mm · humidity 86% · wind 6 m/s · clouds 100%
Thursday10 September 2026
🌧️16°light rain
sunrise 06:40 · sunset 19:57 · night 14° · evening 15° · rain 5.46 mm · humidity 81% · wind 13 m/s · clouds 56%
Friday11 September 2026
🌧️16°light rain
sunrise 06:42 · sunset 19:55 · night 14° · evening 16° · rain 3.3 mm · humidity 70% · wind 8 m/s · clouds 91%
Saturday12 September 2026
🌧️14°light rain
sunrise 06:44 · sunset 19:52 · night 14° · evening 15° · rain 4.2 mm · humidity 89% · wind 5 m/s · clouds 100%
Sunday13 September 2026
🌧️15°light rain
sunrise 06:46 · sunset 19:49 · night 13° · evening 15° · rain 5.67 mm · humidity 89% · wind 6 m/s · clouds 100%
Monday14 September 2026
🌧️12°light rain
sunrise 06:48 · sunset 19:46 · night 11° · evening 12° · rain 0.27 mm · humidity 70% · wind 7 m/s · clouds 100%
Tuesday15 September 2026
🌧️13°light rain
sunrise 06:50 · sunset 19:43 · night 13° · evening 14° · rain 0.42 mm · humidity 68% · wind 7 m/s · clouds 56%
Wednesday16 September 2026
🌧️15°light rain
sunrise 06:53 · sunset 19:40 · night 14° · evening 16° · rain 1.44 mm · humidity 84% · wind 9 m/s · clouds 100%
Thursday17 September 2026
🌧️15°light rain
sunrise 06:55 · sunset 19:37 · night 14° · evening 15° · rain 0.36 mm · humidity 88% · wind 4 m/s · clouds 100%
Friday18 September 2026
🌧️17°light rain
sunrise 06:57 · sunset 19:34 · night 14° · evening 17° · rain 0.33 mm · humidity 82% · wind 5 m/s · clouds 87%
Saturday19 September 2026
☁️17°broken clouds
sunrise 06:59 · sunset 19:31 · night 14° · evening 17° · rain 0.12 mm · humidity 83% · wind 4 m/s · clouds 53%
Sunday20 September 2026
☁️17°overcast clouds
sunrise 07:01 · sunset 19:29 · night 15° · evening 16° · humidity 82% · wind 4 m/s · clouds 85%

UV index in Parnu - is it safe to sunbathe?

UV INDEX · 16-DAY FORECASTParnu03681111+3.5UV MODERATEtoday, daily maxSeek shade around midday. SPF 30+, sunglasses and ahat for longer stays.Unprotected fair skin may burn in about 55 min4Sat5.094Sun6.094Mon7.094Tue8.093Wed9.094Thu10.093Fri11.091Sat12.093Sun13.093Mon14.093Tue15.091Wed16.092Thu17.093Fri18.093Sat19.093Sun20.090-2 low3-5 moderate6-7 high8-10 very high11+ extremeworld-prices.com · 2026-09-05
Today the UV index in Parnu is 4 (moderate) - unprotected fair skin can burn in about 55 minutes. Seek shade around midday. SPF 30+, sunglasses and a hat for longer stays.

Pollen in Parnu - info for allergy sufferers

PLANT POLLEN · 4-DAY FORECASTParnuHighest pollen today: Ragweed1 grains/m³ · low leveltoday5.09tomorrow6.09Mon7.09Tue8.09Grasses--1-Ragweed1---nonelowmoderatehighvery highoff season: alder, birch, mugwort, olive · values in grains/m³ (daily peak)pogodapodroze.pl · 2026-09-05
Today ragweed pollen is highest in Parnu - about 1 grains/m³, low level. Most allergy sufferers should not feel strong symptoms. Pollen levels are a CAMS model forecast and are indicative.

Sea temperature - Parnu

Water today
18°C
Week avg
18°C
Waves today
0.2 m
How's the water?
cold
16-day sea temperature forecast:
5.09 18°C6.09 18°C7.09 18°C8.09 18°C9.09 18°C10.09 18°C11.09 17°C12.09 17°C13.09 17°C
Average sea temperature through the year:
Jan 0°CFeb 0°CMar 1°CApr 6°CMay 13°CJun 19°CJul 21°CAug 21°CSep 18°COct 11°CNov 5°CDec 2°C
Sea-surface temperature from marine models, updated daily. See also: where the sea is warmest right now.

Parnu weather through the year

Parnu - annual climate

Warmest, driest months on average: April, May, June, July.

Upcoming public holidays in Estonia: Christmas Eve — 24 December · Christmas Day — 25 December · St. Stephen's Day — 26 December.

Nearby and related places

ViljandiTallinnTartuRakvereRigaJurmalaNarvaKohtla-Järve

FAQ - Parnu weather

What is the weather like in Parnu today?
Today it is about 15° during the day and 12° at night, light rain.
How far ahead can I check the forecast for Parnu?
This page shows a detailed 14-day forecast plus the long-term monthly climate, so you can plan both a short trip and a holiday months ahead.