Olecko, Poland experiences average highs of 12°C (54°F) and lows of 5°C (41°F) throughout the year. Rainfall is moderate, averaging about 11 rainy days per month. Average highs have warmed by 0.8°C (1.4°F) across the available records.
Olecko, Poland Weather & Climate 2026
Monthly climate averages for Olecko, Poland. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: Feb–Nov 
Wetter season: Jan–Dec At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
4.6/10
Best: May, June, July, August, September
UV Index
3
Low
Temperature 12°C / 5°C
Feels Like 9°C / 2°C
Rainy Days 11
Rainfall 57 mm
Sunshine 7 h
Humidity 79%
Wind Speed 18 km/h
Dew Point 5°C
Snow Days 7 days
Frost Days 14 days
Hottest Month
23°C
August
Avg Low15°C
Rain11days
Coldest Month
-4°C
January
Avg High0°C
Rain13days
Driest Month
8days
September
Avg High18°C
Avg Low11°C
Windiest Month
20 km/h
February (Gusts 39)
Worst Time to Visit
Consider avoiding January, February, November, December due to very cold temperatures, frequent rain.
Sun Position
Sunrise 03:58
Daylight 17.1h
Sunset 21:05
Live conditions—
Olecko on the map · live conditions
Olecko, Poland
- Continent
- Europe
- Country
- Poland
- City
- Olecko
- Population
- 15.9K
- Coordinates
- 54.03°, 22.51°
Seasonal Breakdown
Spring
Mar–May
Avg High 12°C
Avg Low 3°C
Rain 10 days/mo
1/3 best months
Summer
Jun–Aug
Avg High 22°C
Avg Low 14°C
Rain 12 days/mo
3/3 best months
Autumn
Sep–Nov
Avg High 12°C
Avg Low 6°C
Rain 10 days/mo
1/3 best months
Winter
Dec–Feb
Avg High 1°C
Avg Low -3°C
Rain 12 days/mo
Climate Charts
Based on historical averages (2016–2025)
Monthly Temperatures
HighLowShaded bands show the typical range across the available yearly records.
Line chart showing monthly temperatures. Jan: 0°C / -4°C . Feb: 2°C / -3°C . Mar: 6°C / -1°C . Apr: 12°C / 3°C . May: 17°C / 8°C . Jun: 22°C / 13°C . Jul: 22°C / 15°C . Aug: 23°C / 15°C . Sep: 18°C / 11°C . Oct: 12°C / 6°C . Nov: 5°C / 2°C . Dec: 2°C / -1°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 52 mm. Feb: 45 mm. Mar: 37 mm. Apr: 43 mm. May: 59 mm. Jun: 64 mm. Jul: 97 mm. Aug: 75 mm. Sep: 52 mm. Oct: 66 mm. Nov: 45 mm. Dec: 52 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 89%. Feb: 84%. Mar: 77%. Apr: 71%. May: 68%. Jun: 69%. Jul: 74%. Aug: 74%. Sep: 77%. Oct: 85%. Nov: 89%. Dec: 91%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 20 km/h . Feb: 20 km/h . Mar: 19 km/h . Apr: 19 km/h . May: 18 km/h . Jun: 17 km/h . Jul: 17 km/h . Aug: 16 km/h . Sep: 17 km/h . Oct: 20 km/h . Nov: 18 km/h . Dec: 20 km/h .
Sunshine
Sunshine
Sunshine: Jan: 2h. Feb: 4h. Mar: 7h. Apr: 9h. May: 12h. Jun: 13h. Jul: 12h. Aug: 11h. Sep: 8h. Oct: 5h. Nov: 2h. Dec: 2h.
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 1. Feb: UV 2. Mar: UV 3. Apr: UV 4. May: UV 6. Jun: UV 6. Jul: UV 6. Aug: UV 5. Sep: UV 4. Oct: UV 2. Nov: UV 1. Dec: UV 1.
Monthly Daylight Hours
Daylight12h reference
Monthly Dew Point & Comfort
Dew Point Dry Comfortable Humid Muggy Oppressive
Snow Days
Snow DaysSnowfall
Snow Days: Jan: 14 days. Feb: 11 days. Mar: 6 days. Apr: 2 days. May: 1 days. Jun: 0 days. Jul: 0 days. Aug: 0 days. Sep: 0 days. Oct: 1 days. Nov: 6 days. Dec: 11 days.
Climate Trends
Average highs have warmed by 0.8°C (1.4°F) across the available records. Average rainfall is trending drier by about 9 mm.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | Jul 2025 · 23°C | Aug · 23°C |
| Coldest month | Feb 2025 · -4°C | Jan · -4°C |
| Wettest month | Jul 2025 · 122 mm | Jul · 97 mm |
| Windiest month | Jun 2025 · 24 km/h | Feb · 20 km/h |
Month-by-Month Weather Table
January
Poor 
February
Poor March
Poor April
Fair May best
Good June best
Excellent July best
Excellent August best
Excellent September best
Good October
Fair November
Poor December
Poor | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 0°C / -4°C | -4°C / -9°C | 13days (52 mm) Wet | 2.2h Poor | 89% Very Muggy | 0.8 Low | Poor | View Details |
| February | 2°C / -3°C | -2°C / -7°C | 10days (45 mm) Wet | 4.3h Fair | 84% Humid | 1.5 Low | Poor | View Details |
| March | 6°C / -1°C | 2°C / -5°C | 10days (37 mm) Wet | 6.8h Fair | 77% Humid | 2.9 Moderate | Poor | View Details |
| April | 12°C / 3°C | 9°C / 0°C | 9days (43 mm) Wet | 9.4h Good | 71% Muggy | 4.3 Moderate | Fair | View Details |
| May best | 17°C / 8°C | 15°C / 5°C | 11days (59 mm) Wet | 11.9h Excellent | 68% Muggy | 5.5 High | Good | View Details |
| June best | 22°C / 13°C | 22°C / 12°C | 10days (64 mm) Wet | 12.5h Excellent | 69% Muggy | 6 High | Excellent | View Details |
| July best | 22°C / 15°C | 22°C / 14°C | 14days (97 mm) Wet | 11.7h Excellent | 74% Muggy | 5.8 High | Excellent | View Details |
| August best | 23°C / 15°C | 22°C / 14°C | 11days (75 mm) Wet | 10.5h Excellent | 74% Muggy | 5.1 High | Excellent | View Details |
| September best | 18°C / 11°C | 17°C / 9°C | 8days (52 mm) Wet | 8.3h Good | 77% Humid | 3.9 Moderate | Good | View Details |
| October | 12°C / 6°C | 9°C / 3°C | 12days (66 mm) Wet | 5h Fair | 85% Humid | 2 Low | Fair | View Details |
| November | 5°C / 2°C | 2°C / -2°C | 10days (45 mm) Wet | 2.3h Poor | 89% Very Muggy | 1.1 Low | Poor | View Details |
| December | 2°C / -1°C | -2°C / -6°C | 12days (52 mm) Wet | 1.6h Poor | 91% Very Muggy | 0.6 Low | Poor | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Olecko are May, June, July, August, September, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Olecko, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Olecko is August, with average daytime highs of 23°C (73°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Olecko is January, with average overnight lows of -4°C (25°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Olecko is July, averaging 97mm of precipitation across 14 rainy days. An umbrella or waterproof jacket is essential.
The rainy season in Olecko runs through July, January, October, December, with the heaviest rainfall in July. Based on 10-year averages for Olecko.
Olecko receives approximately 86 sunshine hours per year. The sunniest month is June with around 13 hours. Based on climate data for Olecko.
The least favorable months to visit Olecko are January, February, November, December, primarily due to very cold temperatures, frequent rain. For the best conditions, consider May, June, July, August, September instead.
The annual average UV index in Olecko is 3, classified as moderate. Standard sun protection (sunscreen, hat) is recommended during prolonged outdoor exposure.
Average humidity in Olecko is 79%, classified as humid. Humidity levels are generally comfortable and should not affect outdoor activities for most people.
Yes, Olecko receives snow. Months with snowfall average 7 snow days and 8 cm (3 in) of accumulation, with about 14 frost days during winter.
Average wind speeds in Olecko are 18 km/h (11 mph). The windiest month is February with peak winds reaching 20 km/h (12 mph) (gusts up to 39 km/h / 24 mph).
Olecko averages 2 clear-sky days per month with overall cloud cover around 68%. The clearest skies occur in May.
The annual average dew point in Olecko is 5°C (41°F), which feels dry and comfortable. Outdoor activities are comfortable year-round from a humidity standpoint.
Olecko has a Oceanic climate, classified as Cfb under the Köppen system. Temperate climates have mild winters and warm summers, with rainfall spread across the year and four distinct seasons.
The 'feels like' temperature in Olecko ranges from 2°C (36°F) to 9°C (48°F) on average. Wind chill makes winters feel noticeably colder than the actual temperature — layered clothing is recommended.
Yes, June is a great time to visit Olecko. It earns a climate score of 8.2/10 with Excellent.
For June in Olecko, pack Umbrella, Waterproof jacket, Sunscreen (SPF 30+), Sunglasses, Comfortable walking shoes. With average highs of 22°C (72°F) and 10 rainy days, these essentials will keep you comfortable.
Data Source
Climate data derived from ERA5 reanalysis (ECMWF), averaged over 2016–2025. Sea surface temperature from marine reanalysis data. Climate scores and seasonal estimates are computed by WorldStats.
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