Oneaga, Romania experiences average highs of 15°C (59°F) and lows of 6°C (43°F) throughout the year. Rainfall is moderate, averaging about 9 rainy days per month. Average highs have stayed broadly stable across the available records.
Oneaga, Romania Weather & Climate 2026
Monthly climate averages for Oneaga, Romania. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: Jan–Dec 
Wetter season: Apr–Jul At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
5.3/10
Best: June, July, August, September
UV Index
4
Low
Temperature 15°C / 6°C
Feels Like 13°C / 4°C
Rainy Days 9
Rainfall 50 mm
Sunshine 8 h
Humidity 71%
Wind Speed 15 km/h
Dew Point 6°C
Snow Days 5 days
Frost Days 17 days
Hottest Month
27°C
August
Avg Low17°C
Rain8days
Coldest Month
-4°C
January
Avg High3°C
Rain5days
Driest Month
5days
January
Avg High3°C
Avg Low-4°C
Windiest Month
16 km/h
April (Gusts 36)
Worst Time to Visit
Consider avoiding January, February, November, December due to very cold temperatures.
Sun Position
Sunrise 05:16
Daylight 16h
Sunset 21:13
Live conditions—
Oneaga on the map · live conditions
Oneaga, Romania
- Continent
- Europe
- Country
- Romania
- City
- Oneaga
- Population
- 1.8K
- Coordinates
- 47.58°, 26.73°
Seasonal Breakdown
Spring
Mar–May
Avg High 15°C
Avg Low 5°C
Rain 10 days/mo
Summer
Jun–Aug
Avg High 26°C
Avg Low 17°C
Rain 10 days/mo
3/3 best months
Autumn
Sep–Nov
Avg High 15°C
Avg Low 7°C
Rain 7 days/mo
1/3 best months
Winter
Dec–Feb
Avg High 4°C
Avg Low -3°C
Rain 7 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: 3°C / -4°C . Feb: 5°C / -3°C . Mar: 10°C / 0°C . Apr: 16°C / 5°C . May: 20°C / 10°C . Jun: 25°C / 16°C . Jul: 27°C / 17°C . Aug: 27°C / 17°C . Sep: 22°C / 13°C . Oct: 15°C / 7°C . Nov: 8°C / 2°C . Dec: 4°C / -2°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 23 mm. Feb: 29 mm. Mar: 33 mm. Apr: 48 mm. May: 75 mm. Jun: 94 mm. Jul: 69 mm. Aug: 45 mm. Sep: 54 mm. Oct: 48 mm. Nov: 41 mm. Dec: 36 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 78%. Feb: 76%. Mar: 70%. Apr: 65%. May: 65%. Jun: 68%. Jul: 65%. Aug: 64%. Sep: 66%. Oct: 74%. Nov: 83%. Dec: 82%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 16 km/h . Feb: 16 km/h . Mar: 16 km/h . Apr: 16 km/h . May: 16 km/h . Jun: 15 km/h . Jul: 14 km/h . Aug: 13 km/h . Sep: 14 km/h . Oct: 14 km/h . Nov: 14 km/h . Dec: 15 km/h .
Sunshine
Sunshine
Sunshine: Jan: 5h. Feb: 6h. Mar: 8h. Apr: 10h. May: 11h. Jun: 12h. Jul: 12h. Aug: 12h. Sep: 9h. Oct: 7h. Nov: 4h. Dec: 4h.
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 2. Feb: UV 3. Mar: UV 4. Apr: UV 5. May: UV 6. Jun: UV 7. Jul: UV 7. Aug: UV 6. Sep: UV 5. Oct: UV 3. Nov: UV 2. 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: 9 days. Feb: 6 days. Mar: 4 days. Apr: 1 days. May: 0 days. Jun: 0 days. Jul: 0 days. Aug: 0 days. Sep: 0 days. Oct: 0 days. Nov: 4 days. Dec: 8 days.
Climate Trends
Average highs have stayed broadly stable across the available records. Average rainfall is trending drier by about 12 mm.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | Jul 2025 · 28°C | Aug · 27°C |
| Coldest month | Feb 2025 · -5°C | Jan · -4°C |
| Wettest month | May 2025 · 171 mm | Jun · 94 mm |
| Windiest month | Apr 2025 · 17 km/h | Apr · 16 km/h |
Month-by-Month Weather Table
January
Poor 
February
Poor March
Poor April
Fair May
Good June best
Excellent July best
Excellent August best
Excellent September best
Excellent October
Fair November
Poor December
Poor | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 3°C / -4°C | -1°C / -8°C | 5days (23 mm) Good | 4.7h Fair | 78% Humid | 1.7 Low | Poor | View Details |
| February | 5°C / -3°C | 2°C / -7°C | 7days (29 mm) Good | 6h Fair | 76% Humid | 2.5 Moderate | Poor | View Details |
| March | 10°C / 0°C | 7°C / -4°C | 8days (33 mm) Wet | 7.7h Good | 70% Muggy | 3.5 Moderate | Poor | View Details |
| April | 16°C / 5°C | 13°C / 2°C | 10days (48 mm) Wet | 9.6h Good | 65% Muggy | 4.9 Moderate | Fair | View Details |
| May | 20°C / 10°C | 19°C / 8°C | 11days (75 mm) Wet | 10.9h Excellent | 65% Muggy | 5.7 High | Good | View Details |
| June best | 25°C / 16°C | 26°C / 16°C | 12days (94 mm) Wet | 11.9h Excellent | 68% Muggy | 6.8 High | Excellent | View Details |
| July best | 27°C / 17°C | 28°C / 17°C | 11days (69 mm) Wet | 12.2h Excellent | 65% Muggy | 6.7 High | Excellent | View Details |
| August best | 27°C / 17°C | 28°C / 17°C | 8days (45 mm) Wet | 11.6h Excellent | 64% Muggy | 6.2 High | Excellent | View Details |
| September best | 22°C / 13°C | 21°C / 11°C | 8days (54 mm) Wet | 9h Good | 66% Muggy | 4.5 Moderate | Excellent | View Details |
| October | 15°C / 7°C | 13°C / 4°C | 7days (48 mm) Good | 7h Good | 74% Muggy | 2.9 Moderate | Fair | View Details |
| November | 8°C / 2°C | 5°C / -1°C | 7days (41 mm) Good | 4.3h Fair | 83% Humid | 1.7 Low | Poor | View Details |
| December | 4°C / -2°C | 1°C / -6°C | 8days (36 mm) Wet | 3.5h Poor | 82% Humid | 1.2 Low | Poor | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Oneaga are June, July, August, September, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Oneaga, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Oneaga is August, with average daytime highs of 27°C (80°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Oneaga 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 Oneaga is June, averaging 94mm of precipitation across 12 rainy days. An umbrella or waterproof jacket is essential.
The rainy season in Oneaga runs through June, May, July, April, with the heaviest rainfall in June. Based on 10-year averages for Oneaga.
Oneaga receives approximately 98 sunshine hours per year. The sunniest month is July with around 12 hours. Based on climate data for Oneaga.
The least favorable months to visit Oneaga are January, February, November, December, primarily due to very cold temperatures. For the best conditions, consider June, July, August, September instead.
The annual average UV index in Oneaga is 4, classified as moderate. Standard sun protection (sunscreen, hat) is recommended during prolonged outdoor exposure.
Average humidity in Oneaga is 71%, classified as moderate. Humidity levels are generally comfortable and should not affect outdoor activities for most people.
Yes, Oneaga receives snow. Months with snowfall average 5 snow days and 9 cm (4 in) of accumulation, with about 17 frost days during winter.
Average wind speeds in Oneaga are 15 km/h (9 mph). The windiest month is April with peak winds reaching 16 km/h (10 mph) (gusts up to 36 km/h / 22 mph).
Oneaga averages 4 clear-sky days per month with overall cloud cover around 60%. The clearest skies occur in August.
The annual average dew point in Oneaga is 6°C (43°F), which feels dry and comfortable. Outdoor activities are comfortable year-round from a humidity standpoint.
Oneaga 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 Oneaga ranges from 4°C (39°F) to 13°C (55°F) on average. The 'feels like' temperature closely matches the actual temperature throughout most of the year.
Yes, June is a great time to visit Oneaga. It earns a climate score of 8.4/10 with Excellent.
For June in Oneaga, pack Umbrella, Waterproof jacket, Breathable clothing, Sunscreen (SPF 30+), Sun hat. With average highs of 25°C (78°F) and 12 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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