Weather in Saint Petersburg on 18 August 2026
Preliminary outlook for 18 August 2026
A preliminary estimate based on the 2019–2025 archive: daytime around +22°C and nighttime around +13°C, average precipitation 1 mm, wind around 3 m/s, humidity around 71%.
This is a climate-based estimate, not a precise long-range forecast. It is replaced by hourly data when the date enters the forecast window.
+15°C
Weather archive — latest year: 2025
Overcast
Weather archive — latest year: 2025
Nighttime: +11°C
Precipitation: 0.2 mm
Wind: 3 — 4 m/s
Humidity: 79%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +19°C | Sun hours | 2 h |
| UV index | 4 | Cloud cover (avg.) | 72% |
| Pressure (avg.) | 757 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +15°C | Dew point (avg.) | +12°C |
| Heat index (avg.) | +15°C | Wind chill (avg.) | +15°C |
| Wind gusts (max.) | 6 m/s | Wind direction (avg.) | 339° ↑ (N) |
Sunrise
05:21
Duration
15 h 22 min
Sunset
20:43
Moonrise
22:34
Moonset
19:40
Moon phase
Last Quarter
Illumination
29%
+17°C
Weather archive — for 2024 year
Partly Cloudy
Weather archive — for 2024 year
Nighttime: +13°C
Precipitation: 5.5 mm
Wind: 4 — 5 m/s
Humidity: 70%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +21°C | Sun hours | 12 h |
| UV index | 4 | Cloud cover (avg.) | 29% |
| Pressure (avg.) | 757 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +17°C | Dew point (avg.) | +12°C |
| Heat index (avg.) | +17°C | Wind chill (avg.) | +17°C |
| Wind gusts (max.) | 8 m/s | Wind direction (avg.) | 278° ← (WNW) |
Sunrise
05:22
Duration
15 h 20 min
Sunset
20:42
Moonrise
21:02
Moonset
01:57
Moon phase
Waxing Gibbous
Illumination
93%
+17°C
Weather archive — for 2023 year
Overcast
Weather archive — for 2023 year
Nighttime: +14°C
Precipitation: 0 mm
Wind: 3 — 4 m/s
Humidity: 75%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +19°C | Sun hours | 8 h |
| UV index | 5 | Cloud cover (avg.) | 40% |
| Pressure (avg.) | 771 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +17°C | Dew point (avg.) | +13°C |
| Heat index (avg.) | +17°C | Wind chill (avg.) | +17°C |
| Wind gusts (max.) | 7 m/s | Wind direction (avg.) | 33° ↗ (NE) |
Sunrise
05:20
Duration
15 h 24 min
Sunset
20:44
Moonrise
07:17
Moonset
21:26
Moon phase
Waxing Crescent
Illumination
9%
+24°C
Weather archive — for 2022 year
Partly Cloudy
Weather archive — for 2022 year
Nighttime: +18°C
Precipitation: 0 mm
Wind: 2 — 3 m/s
Humidity: 63%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +30°C | Sun hours | 13 h |
| UV index | 5 | Cloud cover (avg.) | 48% |
| Pressure (avg.) | 764 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +24°C | Dew point (avg.) | +16°C |
| Heat index (avg.) | +24°C | Wind chill (avg.) | +24°C |
| Wind gusts (max.) | 4 m/s | Wind direction (avg.) | 149° ↘ (SSE) |
Sunrise
05:21
Duration
15 h 22 min
Sunset
20:43
Moonrise
22:06
Moonset
14:17
Moon phase
Waning Gibbous
Illumination
54%
+18°C
Weather archive — for 2021 year
Partly Cloudy
Weather archive — for 2021 year
Nighttime: +15°C
Precipitation: 1.6 mm
Wind: 5 — 6 m/s
Humidity: 71%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +22°C | Sun hours | 15 h |
| UV index | 4 | Cloud cover (avg.) | 49% |
| Pressure (avg.) | 753 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +19°C | Dew point (avg.) | +13°C |
| Heat index (avg.) | +19°C | Wind chill (avg.) | +19°C |
| Wind gusts (max.) | 12 m/s | Wind direction (avg.) | 186° ↓ (S) |
Sunrise
05:21
Duration
15 h 22 min
Sunset
20:43
Moonrise
19:24
Moonset
No moonset
Moon phase
Waxing Gibbous
Illumination
69%
+16°C
Weather archive — for 2020 year
Partly Cloudy
Weather archive — for 2020 year
Nighttime: +11°C
Precipitation: 0 mm
Wind: 2 — 3 m/s
Humidity: 73%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +21°C | Sun hours | 15 h |
| UV index | 5 | Cloud cover (avg.) | 14% |
| Pressure (avg.) | 759 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +16°C | Dew point (avg.) | +11°C |
| Heat index (avg.) | +16°C | Wind chill (avg.) | +16°C |
| Wind gusts (max.) | 4 m/s | Wind direction (avg.) | 244° ↙ (WSW) |
Sunrise
05:22
Duration
15 h 20 min
Sunset
20:42
Moonrise
03:27
Moonset
21:07
Moon phase
New Moon
Illumination
0%
+17°C
Weather archive — for 2019 year
Partly Cloudy
Weather archive — for 2019 year
Nighttime: +12°C
Precipitation: 0 mm
Wind: 2 — 3 m/s
Humidity: 64%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +22°C | Sun hours | 15 h |
| UV index | 5 | Cloud cover (avg.) | 17% |
| Pressure (avg.) | 761 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +17°C | Dew point (avg.) | +10°C |
| Heat index (avg.) | +17°C | Wind chill (avg.) | +17°C |
| Wind gusts (max.) | 6 m/s | Wind direction (avg.) | 102° → (ESE) |
Sunrise
05:20
Duration
15 h 24 min
Sunset
20:44
Moonrise
21:53
Moonset
08:13
Moon phase
Waning Gibbous
Illumination
78%
Weather in Saint Petersburg on 18 August in previous years
| Year | Day | Nighttime | Average | Sun | UV | Humidity | Wind |
|---|---|---|---|---|---|---|---|
| 2025 |
+19°C
|
+11°C
|
+15°C | 2 h | 4 | 79% | 3 — 4 m/s |
| 2024 |
+21°C
|
+13°C
|
+17°C | 12 h | 4 | 70% | 4 — 5 m/s |
| 2023 |
+19°C
|
+14°C
|
+17°C | 8 h | 5 | 75% | 3 — 4 m/s |
| 2022 |
+30°C
|
+18°C
|
+24°C | 13 h | 5 | 63% | 2 — 3 m/s |
| 2021 |
+22°C
|
+15°C
|
+18°C | 15 h | 4 | 71% | 5 — 6 m/s |
| 2020 |
+21°C
|
+11°C
|
+16°C | 15 h | 5 | 73% | 2 — 3 m/s |
| 2019 |
+22°C
|
+12°C
|
+17°C | 15 h | 5 | 64% | 2 — 3 m/s |