Small city
177K
51 km²
143m
06:59 UTC+2
UAH
Sumy, Ukraine is a 177K-resident city with 142 sunny days and 110 frost days annually and an annual PM2.5 of 10.8 µg/m³. A city in Ukraine.
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Feels-like °C
-13
-11
-5
6
14
24
25
24
16
3
-6
-13
Dinner outside
J
F
M
A
M
J
J
A
S
O
N
D
Climate Lab·Sumy
Monthly climate metrics across temperature, precipitation, wind, and UV.
SumyUkraine
| Metric | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temperature | |||||||||||||
| Daily high°C | 2 | 4 | 12 | 16 | 23 | 28 | 29 | 29 | 24 | 16 | 8 | 3 | 16 |
| Daily mean°C | -2 | 1 | 4 | 10 | 16 | 22 | 22 | 23 | 19 | 10 | 3 | -1 | 11 |
| Daily low°C | -10 | -5 | -1 | 3 | 9 | 15 | 17 | 17 | 11 | 5 | -2 | -6 | 4 |
| Thermal comfort | |||||||||||||
| High feelsDaily high feels-like°C | -4 | -1 | 11 | 15 | 25 | 30 | 32 | 32 | 26 | 13 | 4 | -3 | 15 |
| Mean feelsDaily mean feels-like°C | -13 | -11 | -5 | 6 | 14 | 24 | 25 | 24 | 16 | 3 | -6 | -13 | 5 |
| Low feelsDaily low feels-like°C | -27 | -21 | -16 | -5 | 4 | 15 | 15 | 15 | 4 | -6 | -16 | -24 | -5 |
| Humidity | |||||||||||||
| HumidityRelative humidity% | 88 | 81 | 67 | 65 | 50 | 61 | 60 | 60 | 57 | 73 | 87 | 90 | 70 |
| Dewpoint°C | -5.0 | -2.8 | -2.2 | 4.3 | 5.5 | 14.8 | 15.0 | 14.9 | 7.1 | 5.0 | 0.1 | -2.3 | 4.5 |
| Precipitation | |||||||||||||
| Rainfallmm | 23 | 16 | 24 | 73 | 58 | 70 | 82 | 67 | 24 | 71 | 51 | 28 | 586 |
| Rain days≥1mm | 4 | 5 | 6 | 13 | 10 | 12 | 8 | 8 | 7 | 11 | 8 | 4 | 96 |
| Snowfallmm | 39 | 36 | 8 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 10 | 36 | 131 |
| Snow days≥1mm | 8 | 9 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 8 | 31 |
| Wind | |||||||||||||
| Wind avgm/s | 4.2 | 4.3 | 4.1 | 4.0 | 3.6 | 3.4 | 2.7 | 3.1 | 3.4 | 4.1 | 4.1 | 4.6 | 3.8 |
| Wind gustsm/s | 7.5 | 7.3 | 7.6 | 6.8 | 6.8 | 6.4 | 5.8 | 6.0 | 7.0 | 7.0 | 8.7 | 7.4 | 7.0 |
| Sun & UV | |||||||||||||
| Sunshinehrs/day | 0.0 | 3.3 | 7.8 | 8.2 | 11.0 | 11.1 | 11.8 | 10.7 | 9.9 | 5.6 | 0.0 | 0.0 | 6.6 |
| Clear skyindex | 7% | 19% | 36% | 36% | 44% | 50% | 57% | 57% | 63% | 30% | 12% | 6% | 35% |
| UV indexmax avg | 0.6 | 1.0 | 1.8 | 2.8 | 4.6 | 5.2 | 5.9 | 4.8 | 3.6 | 1.5 | 0.5 | 0.4 | 2.7 |
Based on 2014–2024 hourly climate data · Updated Mar 2025
Confidence: High
Lifestyle Calendar·Sumy
Sumy offers a solid outdoor season. June through August are perfect for all activities. Even dinner outside manages 3/12 months, while walking is comfortable 12/12 months — impressive.
SumyUkraine
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Annual
3/12
Dinner Outside32
Jan: 0% viability
0Feb: 0% viability
0Mar: 1% viability
1Apr: 17% viability
17May: 45% viability
45Jun: 80% viability
80Jul: 86% viability
86Aug: 91% viability
91Sep: 52% viability
52Oct: 6% viability
6Nov: 0% viability
0Dec: 0% viability
03/12
Dinner OutsideJan: 0% viability
0Feb: 0% viability
0Mar: 1% viability
1Apr: 17% viability
17May: 45% viability
45Jun: 80% viability
80Jul: 86% viability
86Aug: 91% viability
91Sep: 52% viability
52Oct: 6% viability
6Nov: 0% viability
0Dec: 0% viability
032%
Cold
5/12
Lunch Outside46
Jan: 1% viability
1Feb: 5% viability
5Mar: 36% viability
36Apr: 56% viability
56May: 74% viability
74Jun: 77% viability
77Jul: 72% viability
72Aug: 87% viability
87Sep: 79% viability
79Oct: 56% viability
56Nov: 9% viability
9Dec: 0% viability
05/12
Lunch OutsideJan: 1% viability
1Feb: 5% viability
5Mar: 36% viability
36Apr: 56% viability
56May: 74% viability
74Jun: 77% viability
77Jul: 72% viability
72Aug: 87% viability
87Sep: 79% viability
79Oct: 56% viability
56Nov: 9% viability
9Dec: 0% viability
046%
Cold
12/12
Walking90
Jan: 81% viability
81Feb: 90% viability
90Mar: 94% viability
94Apr: 96% viability
96May: 98% viability
98Jun: 91% viability
91Jul: 73% viability
73Aug: 88% viability
88Sep: 96% viability
96Oct: 96% viability
96Nov: 93% viability
93Dec: 83% viability
8312/12
WalkingJan: 81% viability
81Feb: 90% viability
90Mar: 94% viability
94Apr: 96% viability
96May: 98% viability
98Jun: 91% viability
91Jul: 73% viability
73Aug: 88% viability
88Sep: 96% viability
96Oct: 96% viability
96Nov: 93% viability
93Dec: 83% viability
8390%
12/12
Running89
Jan: 81% viability
81Feb: 90% viability
90Mar: 94% viability
94Apr: 96% viability
96May: 97% viability
97Jun: 88% viability
88Jul: 68% viability
68Aug: 82% viability
82Sep: 96% viability
96Oct: 96% viability
96Nov: 93% viability
93Dec: 83% viability
8312/12
RunningJan: 81% viability
81Feb: 90% viability
90Mar: 94% viability
94Apr: 96% viability
96May: 97% viability
97Jun: 88% viability
88Jul: 68% viability
68Aug: 82% viability
82Sep: 96% viability
96Oct: 96% viability
96Nov: 93% viability
93Dec: 83% viability
8389%
Heat
Tap any month for details · Click activity name for overview
ComfortableModerateUncomfortable
Based on 2014–2024 hourly climate data · Updated Mar 2025
Confidence: High
