Rūdsar weather in December
In December, Rūdsar sees average daytime highs of 13°C and overnight lows near 10°C, with 136 mm of precipitation across 13 wet days and about 9.5 hours of daylight. It is the 9th-warmest and 4th-wettest month of the year here.
Highs ease over the month, from about 14°C in the first days to 13°C by the end. The sky is clear or mostly clear about 32% of the time in December, and the air most often feels dry.
Daylight stretches from about 9 h 36 min at the start of December to 9 h 30 min by month's end. Set against the rest of the year, December is Rūdsar's 9th-clearest and 4th-windiest month. For the whole year in context, see Rūdsar's year-round climate.
- Daytime high
- 13°
- 9th warmest
- Overnight low
- 10°
- 4th coldest
- Precipitation
- 136 mm
- 13 wet days
- Daylight
- 9 h 30 min
- 7:21 AM – 4:49 PM
- Cloud cover
- 59%
- 9th clearest
- Wind
- 11 km/h
- 4th windiest
- Solar energy
- 2.01 kWh/m²
- Travel score
- 3.5
- out of 10
Rūdsar is city in Gilan Province, Iran.
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in December
Highs ease over the month, from about 14°C in the first days to 13°C by the end.
A typical December day in Rūdsar reaches about 13°C in the afternoon and slips back to 10°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 10°C and 17°C. Set against its neighbours, December runs about 4°C cooler than November and about 2°C warmer than January.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 12 |
| Avg low (°C) | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 9 | 9 | 9 | 9 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 14 | 11 |
| 2 | 14 | 11 |
| 3 | 14 | 11 |
| 4 | 14 | 11 |
| 5 | 14 | 11 |
| 6 | 14 | 11 |
| 7 | 14 | 11 |
| 8 | 14 | 11 |
| 9 | 14 | 10 |
| 10 | 14 | 10 |
| 11 | 13 | 10 |
| 12 | 13 | 10 |
| 13 | 13 | 10 |
| 14 | 13 | 10 |
| 15 | 13 | 10 |
| 16 | 13 | 10 |
| 17 | 13 | 10 |
| 18 | 13 | 10 |
| 19 | 13 | 10 |
| 20 | 13 | 10 |
| 21 | 13 | 10 |
| 22 | 13 | 10 |
| 23 | 13 | 10 |
| 24 | 13 | 10 |
| 25 | 13 | 9 |
| 26 | 13 | 9 |
| 27 | 13 | 9 |
| 28 | 13 | 9 |
| 29 | 13 | 9 |
| 30 | 13 | 9 |
| 31 | 12 | 9 |
Rūdsar weather by month
How December compares with the rest of the year at a glance. December is the 9th-warmest and 4th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 11° / 8° | 123 | 13 | 1.2 | 9.7 | 2.7 |
| Feb | 11° / 7° | 116 | 12.5 | 1.6 | 10.6 | 2.4 |
| Mar | 13° / 9° | 106 | 13.5 | 0.4 | 11.7 | 3.3 |
| Apr | 16° / 12° | 74 | 10.6 | 0 | 12.9 | 5.0 |
| May | 21° / 17° | 41 | 7.7 | 0 | 14 | 6.9 |
| Jun | 25° / 22° | 46 | 6.6 | 0 | 14.5 | 7.8 |
| Jul | 28° / 24° | 49 | 7.1 | 0 | 14.3 | 7.1 |
| Aug | 28° / 25° | 60 | 8.8 | 0 | 13.4 | 6.6 |
| Sep | 25° / 22° | 145 | 12.8 | 0 | 12.3 | 6.6 |
| Oct | 22° / 18° | 189 | 14.8 | 0 | 11 | 6.0 |
| Nov | 17° / 14° | 186 | 14.5 | 0.2 | 10 | 4.8 |
| Dec | 13° / 10° | 136 | 13 | 0.5 | 9.5 | 3.5 |
Cloud cover in December
The sky is clear or mostly clear about 32% of the time in December.
Beyond those clear spells, partly cloudy skies cover about 14% of December, with mostly cloudy or overcast conditions the remaining 54%. Skies tend to open up as the month goes on.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 40 | 39 | 39 | 39 | 39 | 39 | 39 | 40 | 40 | 40 | 42 | 42 | 43 | 44 | 44 | 47 | 47 | 48 | 49 | 50 | 50 | 52 | 51 | 52 | 52 | 53 | 53 | 53 | 52 | 52 | 52 |
| Cloudier (%) | 60 | 61 | 61 | 61 | 61 | 61 | 61 | 60 | 60 | 60 | 58 | 58 | 57 | 56 | 56 | 53 | 53 | 52 | 51 | 50 | 50 | 48 | 49 | 48 | 48 | 47 | 47 | 47 | 48 | 48 | 48 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 40 | 60 |
| 2 | 39 | 61 |
| 3 | 39 | 61 |
| 4 | 39 | 61 |
| 5 | 39 | 61 |
| 6 | 39 | 61 |
| 7 | 39 | 61 |
| 8 | 40 | 60 |
| 9 | 40 | 60 |
| 10 | 40 | 60 |
| 11 | 42 | 58 |
| 12 | 42 | 58 |
| 13 | 43 | 57 |
| 14 | 44 | 56 |
| 15 | 44 | 56 |
| 16 | 47 | 53 |
| 17 | 47 | 53 |
| 18 | 48 | 52 |
| 19 | 49 | 51 |
| 20 | 50 | 50 |
| 21 | 50 | 50 |
| 22 | 52 | 48 |
| 23 | 51 | 49 |
| 24 | 52 | 48 |
| 25 | 52 | 48 |
| 26 | 53 | 47 |
| 27 | 53 | 47 |
| 28 | 53 | 47 |
| 29 | 52 | 48 |
| 30 | 52 | 48 |
| 31 | 52 | 48 |
Chance of precipitation in December
Rūdsar gets around 136 mm of rain and snow over 13 wet days in December. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable precipitation averages around 43% and peaks near 50% on the wettest days, and about 1 day brings snow. The odds ease toward the end of the month.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 50 | 50 | 50 | 49 | 49 | 49 | 48 | 48 | 47 | 46 | 46 | 45 | 45 | 44 | 43 | 43 | 42 | 41 | 41 | 40 | 39 | 38 | 38 | 37 | 37 | 36 | 36 | 36 | 36 | 36 | 36 |
| Snow chance (%) | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 2 | 2 | 2 |
| Rain chance (%) | Snow chance (%) | |
|---|---|---|
| 1 | 50 | 1 |
| 2 | 50 | 1 |
| 3 | 50 | 1 |
| 4 | 49 | 1 |
| 5 | 49 | 1 |
| 6 | 49 | 1 |
| 7 | 48 | 1 |
| 8 | 48 | 1 |
| 9 | 47 | 2 |
| 10 | 46 | 2 |
| 11 | 46 | 2 |
| 12 | 45 | 2 |
| 13 | 45 | 2 |
| 14 | 44 | 2 |
| 15 | 43 | 2 |
| 16 | 43 | 2 |
| 17 | 42 | 2 |
| 18 | 41 | 2 |
| 19 | 41 | 2 |
| 20 | 40 | 2 |
| 21 | 39 | 2 |
| 22 | 38 | 2 |
| 23 | 38 | 2 |
| 24 | 37 | 2 |
| 25 | 37 | 2 |
| 26 | 36 | 1 |
| 27 | 36 | 1 |
| 28 | 36 | 1 |
| 29 | 36 | 2 |
| 30 | 36 | 2 |
| 31 | 36 | 2 |
Humidity in December
Most of December feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, December lands in the dry band about 98% of days. It rarely turns muggy — the humid and sticky bands barely register.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 92 | 93 | 94 | 94 | 95 | 95 | 96 | 96 | 97 | 97 | 98 | 98 | 98 | 99 | 99 | 99 | 99 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
| Comfortable (%) | 8 | 7 | 6 | 6 | 5 | 5 | 4 | 4 | 3 | 3 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Dry (%) | Comfortable (%) | |
|---|---|---|
| 1 | 92 | 8 |
| 2 | 93 | 7 |
| 3 | 94 | 6 |
| 4 | 94 | 6 |
| 5 | 95 | 5 |
| 6 | 95 | 5 |
| 7 | 96 | 4 |
| 8 | 96 | 4 |
| 9 | 97 | 3 |
| 10 | 97 | 3 |
| 11 | 98 | 2 |
| 12 | 98 | 2 |
| 13 | 98 | 2 |
| 14 | 99 | 1 |
| 15 | 99 | 1 |
| 16 | 99 | 1 |
| 17 | 99 | 1 |
| 18 | 100 | 0 |
| 19 | 100 | 0 |
| 20 | 100 | 0 |
| 21 | 100 | 0 |
| 22 | 100 | 0 |
| 23 | 100 | 0 |
| 24 | 100 | 0 |
| 25 | 100 | 0 |
| 26 | 100 | 0 |
| 27 | 100 | 0 |
| 28 | 100 | 0 |
| 29 | 100 | 0 |
| 30 | 100 | 0 |
| 31 | 100 | 0 |
Wind in December
Winds average 11 km/h in December.
Across December, daily wind ranges from about 11 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 |
| Feels | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 12 | calm |
| 2 | 12 | calm |
| 3 | 12 | calm |
| 4 | 12 | calm |
| 5 | 12 | calm |
| 6 | 12 | calm |
| 7 | 12 | calm |
| 8 | 12 | calm |
| 9 | 12 | calm |
| 10 | 12 | calm |
| 11 | 12 | calm |
| 12 | 12 | calm |
| 13 | 11 | calm |
| 14 | 11 | calm |
| 15 | 11 | calm |
| 16 | 11 | calm |
| 17 | 11 | calm |
| 18 | 11 | calm |
| 19 | 11 | calm |
| 20 | 11 | calm |
| 21 | 11 | calm |
| 22 | 11 | calm |
| 23 | 11 | calm |
| 24 | 11 | calm |
| 25 | 11 | calm |
| 26 | 11 | calm |
| 27 | 11 | calm |
| 28 | 11 | calm |
| 29 | 11 | calm |
| 30 | 11 | calm |
| 31 | 11 | calm |
Sunrise & sunset in December
Daylight runs from about 9 h 36 min at the start of December to 9 h 30 min by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 6 minutes over December. Sunrise moves from 7:10 AM to 7:28 AM, and sunset from 4:48 PM to 4:56 PM.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 9.6 | 9.6 | 9.6 | 9.6 | 9.6 | 9.6 | 9.5 | 9.5 | 9.5 | 9.5 | 9.5 | 9.5 | 9.5 | 9.5 | 9.5 | 9.5 | 9.5 | 9.5 | 9.4 | 9.4 | 9.4 | 9.4 | 9.4 | 9.4 | 9.4 | 9.5 | 9.5 | 9.5 | 9.5 | 9.5 | 9.5 |
| Sunrise (AM) | 7:10 | 7:10 | 7:11 | 7:12 | 7:13 | 7:14 | 7:15 | 7:16 | 7:16 | 7:17 | 7:18 | 7:19 | 7:19 | 7:20 | 7:21 | 7:21 | 7:22 | 7:22 | 7:23 | 7:23 | 7:24 | 7:24 | 7:25 | 7:25 | 7:26 | 7:26 | 7:26 | 7:27 | 7:27 | 7:27 | 7:28 |
| Sunset (PM) | 4:48 | 4:47 | 4:47 | 4:47 | 4:47 | 4:47 | 4:47 | 4:47 | 4:47 | 4:47 | 4:48 | 4:48 | 4:48 | 4:48 | 4:49 | 4:49 | 4:49 | 4:49 | 4:50 | 4:50 | 4:51 | 4:51 | 4:52 | 4:52 | 4:53 | 4:53 | 4:54 | 4:54 | 4:55 | 4:56 | 4:56 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 9.6 | 7:10 | 4:48 |
| 2 | 9.6 | 7:10 | 4:47 |
| 3 | 9.6 | 7:11 | 4:47 |
| 4 | 9.6 | 7:12 | 4:47 |
| 5 | 9.6 | 7:13 | 4:47 |
| 6 | 9.6 | 7:14 | 4:47 |
| 7 | 9.5 | 7:15 | 4:47 |
| 8 | 9.5 | 7:16 | 4:47 |
| 9 | 9.5 | 7:16 | 4:47 |
| 10 | 9.5 | 7:17 | 4:47 |
| 11 | 9.5 | 7:18 | 4:48 |
| 12 | 9.5 | 7:19 | 4:48 |
| 13 | 9.5 | 7:19 | 4:48 |
| 14 | 9.5 | 7:20 | 4:48 |
| 15 | 9.5 | 7:21 | 4:49 |
| 16 | 9.5 | 7:21 | 4:49 |
| 17 | 9.5 | 7:22 | 4:49 |
| 18 | 9.5 | 7:22 | 4:49 |
| 19 | 9.4 | 7:23 | 4:50 |
| 20 | 9.4 | 7:23 | 4:50 |
| 21 | 9.4 | 7:24 | 4:51 |
| 22 | 9.4 | 7:24 | 4:51 |
| 23 | 9.4 | 7:25 | 4:52 |
| 24 | 9.4 | 7:25 | 4:52 |
| 25 | 9.4 | 7:26 | 4:53 |
| 26 | 9.5 | 7:26 | 4:53 |
| 27 | 9.5 | 7:26 | 4:54 |
| 28 | 9.5 | 7:27 | 4:54 |
| 29 | 9.5 | 7:27 | 4:55 |
| 30 | 9.5 | 7:27 | 4:56 |
| 31 | 9.5 | 7:28 | 4:56 |
Solar energy in December
Average shortwave solar energy reaching the ground each day in December, about 2.01 kWh/m² — the year's lowest.
For context, solar energy here swings from a low near 2.01 kWh/m² to a high of 6.34 kWh/m² in June across the year — December's 2.01 kWh/m² sits near the bottom.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 | 2.1 | 2.1 | 2.1 | 2.1 | 2.1 | 2.1 | 2.1 | 2.1 | 2.1 | 2.1 |
| Level | Moderate | Moderate | Moderate | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 2.0 | Moderate |
| 2 | 2.0 | Moderate |
| 3 | 2.0 | Moderate |
| 4 | 2.0 | Dim |
| 5 | 2.0 | Dim |
| 6 | 2.0 | Dim |
| 7 | 2.0 | Dim |
| 8 | 2.0 | Dim |
| 9 | 2.0 | Dim |
| 10 | 2.0 | Dim |
| 11 | 2.0 | Dim |
| 12 | 2.0 | Dim |
| 13 | 2.0 | Dim |
| 14 | 2.0 | Dim |
| 15 | 2.0 | Dim |
| 16 | 2.0 | Dim |
| 17 | 2.0 | Moderate |
| 18 | 2.0 | Moderate |
| 19 | 2.0 | Moderate |
| 20 | 2.0 | Moderate |
| 21 | 2.0 | Moderate |
| 22 | 2.1 | Moderate |
| 23 | 2.1 | Moderate |
| 24 | 2.1 | Moderate |
| 25 | 2.1 | Moderate |
| 26 | 2.1 | Moderate |
| 27 | 2.1 | Moderate |
| 28 | 2.1 | Moderate |
| 29 | 2.1 | Moderate |
| 30 | 2.1 | Moderate |
| 31 | 2.1 | Moderate |
Hazard calendar for Rūdsar
In December, Rūdsar sits inside its rainy season season. The full year is below, with each hazard's peak months called out.
Rūdsar's rainy season runs September–March, when most of the year's rain falls.
Rūdsar sees seasonal dust haze (May), heaviest in May.
Is December a good time to visit Rūdsar?
Our two travel scores rate December for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
December is a weaker month for outdoor sightseeing in Rūdsar.
What to pack for Rūdsar in December
From December's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In December, Rūdsar sees daytime highs around 13°C and nights near 10°C. Worth packing: a warm layer and rain gear. About 13 days see rain.
Sea temperature near Rūdsar in December
The nearest coast averages about 15°C in December — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea offshore is warmest in August at about 28°C and coldest in February near 10°C.
It's comfortable for a long swim from May 24 to Nov 5 — about 5.5 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 12 | 10 | 11 | 13 | 19 | 24 | 27 | 28 | 26 | 23 | 19 | 15 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Cool | Warm | Warm | Warm | Warm | Refreshing | Cool | Bracing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 12 | Bracing |
| Feb | 10 | Bracing |
| Mar | 11 | Bracing |
| Apr | 13 | Bracing |
| May | 19 | Cool |
| Jun | 24 | Warm |
| Jul | 27 | Warm |
| Aug | 28 | Warm |
| Sep | 26 | Warm |
| Oct | 23 | Refreshing |
| Nov | 19 | Cool |
| Dec | 15 | Bracing |
UV index in Rūdsar in December
Clear-sky midday UV in December peaks around 2. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Rūdsar peaks around July 18 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 11 at about 2 (moderate).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 2 | 4 | 4 | 6 | 8 | 8 | 9 | 8 | 6 | 4 | 3 | 2 |
| Level | Low | Moderate | Moderate | High | Very high | Very high | Very high | Very high | High | Moderate | Moderate | Moderate |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 2 | Low |
| Feb | 4 | Moderate |
| Mar | 4 | Moderate |
| Apr | 6 | High |
| May | 8 | Very high |
| Jun | 8 | Very high |
| Jul | 9 | Very high |
| Aug | 8 | Very high |
| Sep | 6 | High |
| Oct | 4 | Moderate |
| Nov | 3 | Moderate |
| Dec | 2 | Moderate |
Air quality in Rūdsar in December
Average fine-particle pollution (PM2.5) through the year — so you can see where December falls, not just the annual average.
Air quality in Rūdsar is worst in September — around 30 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (July, 15 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 18 | 19 | 26 | 21 | 20 | 16 | 15 | 21 | 30 | 28 | 22 | 18 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 18 | Moderate |
| Feb | 19 | Moderate |
| Mar | 26 | Moderate |
| Apr | 21 | Moderate |
| May | 20 | Moderate |
| Jun | 16 | Moderate |
| Jul | 15 | Moderate |
| Aug | 21 | Moderate |
| Sep | 30 | Moderate |
| Oct | 28 | Moderate |
| Nov | 22 | Moderate |
| Dec | 18 | Moderate |
Where is Rūdsar?
Rūdsar sits at 37.1°N, 50.3°E, -23 m above sea level, in Iran. The nearest listed city is Amlash, 10 km away.
Topography around Rūdsar
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Rūdsar.
Within 3 km, the terrain around Rūdsar has only modest variations in elevation — a maximum elevation change of 16 m around an average of -22 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 974 m; within 80 km, extreme variations in elevation — a maximum elevation change of 4,165 m.
The land around Rūdsar is covered by cropland (38%) and artificial surfaces (25%) within 3 km, water (37%), trees (26%) and cropland (25%) within 16 km, and water (48%) and trees (21%) within 80 km.
Iran travel facts
- Travel advisory
- Level 4
- Do Not Travel
- Power plugs
- Type C / F
- 220 V · 50 Hz
- Prices
- ≈ 352% of US
- price level, 2025
- GDP per capita
- $3,924
- 2025
- Happiness
- 5.2 / 10
- World Happiness, 2025
- Safe drinking water
- 94%
- of population, 2024
- Homicide rate
- 2.4
- per 100k, 2014
- Road deaths
- 21.5
- per 100k/yr, 2019
- Income group
- Upper middle
- World Bank
- English
- Low
- EF EPI 492
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Rūdsar (37.137°, 50.2917°, elevation -23 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).