Climate and average weather in Qaşr-e Shīrīn
In Qaşr-e Shīrīn, the summers are sweltering, dry, and clear and the winters are cool and mostly clear.
Over the course of the year, the temperature in Qaşr-e Shīrīn typically varies from 5°C to 44°C, and is rarely below 0°C or above 48°C. July is the hottest month of the year, while January is the coldest.
Based on the travel score, the best times of year to visit Qaşr-e Shīrīn for warm-weather activities are from late February to late April and late October to early December.
- Hottest
- Jul
- 44°
- Coldest
- Jan
- 5°
- Wettest
- Jan
- 89 mm
- Driest
- Aug
- 0 mm
- Rain / yr
- 451 mm
- 50 wet days
- Daylight
- 9.7–14.3 h
- shortest–longest
- Elevation
- 363 m
- 34.5°N
- Clearest
- Jul
- 3% cloud
Qaşr-e Shīrīn is city in Kermanshah Province, Iran.
- Founded
- ~650 CE
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Qaşr-e Shīrīn weather by month, at a glance
The whole year in one picture — sky, rain, humidity, temperature and travel score. Click any band to jump to its full chart.
Each stripe is one measure across the whole year, stacked so a single day reads top to bottom. The sky band runs overcast grey on top down to clear blue at the base — more blue means sunnier — followed by the rainfall curve, the humidity band, a temperature strip that tints each stretch of the year by how warm its average high is, and the travel-score line at the foot. Scan straight down any date to read that day across every measure at once; the score climbs highest around late February to late April.
Temperature through the year
Daily average highs and lows in Qaşr-e Shīrīn, from 1991–2020 of climate data. The shaded bands show the range most days fall in — 10th to 90th percentile.
The hot season lasts 4.2 months, from May 24 to September 28, with daily high temperatures above 37°C. The hottest month of the year in Qaşr-e Shīrīn is July, with an average high of 44°C and low of 28°C.
The cool season lasts 3.4 months, from November 25 to March 7, with daily high temperatures below 20°C. The coldest month of the year in Qaşr-e Shīrīn is January, with an average low of 5°C and high of 15°C.
Days typically run about 13°C warmer than nights, with the widest day–night swing (around 17°C) in September.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 15 | 17 | 22 | 28 | 35 | 41 | 44 | 44 | 40 | 32 | 23 | 17 |
| Avg low (°C) | 5 | 6 | 10 | 15 | 20 | 25 | 28 | 27 | 23 | 18 | 11 | 7 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| Jan | 15 | 5 |
| Feb | 17 | 6 |
| Mar | 22 | 10 |
| Apr | 28 | 15 |
| May | 35 | 20 |
| Jun | 41 | 25 |
| Jul | 44 | 28 |
| Aug | 44 | 27 |
| Sep | 40 | 23 |
| Oct | 32 | 18 |
| Nov | 23 | 11 |
| Dec | 17 | 7 |
How hot and cold Qaşr-e Shīrīn really feels
The felt-temperature range through the year — heat index on the day's high (summer humidity), wind chill on the night's low (winter wind). The dashed lines are the plain thermometer; the gap is how much hotter or colder it really feels.
On the hottest afternoons, once humidity is folded in, Qaşr-e Shīrīn feels like about 44°C (around July 24). About 166 days a year carry some heat stress, and 109 of them tip into dangerous heat (feels-like above 39°C), peaking in July.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Feels-like high (°C) | 15 | 17 | 22 | 28 | 35 | 41 | 44 | 44 | 39 | 32 | 23 | 17 |
| Air high (°C) | 15 | 17 | 22 | 28 | 35 | 41 | 44 | 44 | 40 | 32 | 23 | 17 |
| Feels-like low (°C) | 3 | 5 | 9 | 15 | 20 | 25 | 28 | 27 | 23 | 18 | 11 | 6 |
| Air low (°C) | 5 | 6 | 10 | 15 | 20 | 25 | 28 | 27 | 23 | 18 | 11 | 7 |
| Feels-like high (°C) | Air high (°C) | Feels-like low (°C) | Air low (°C) | |
|---|---|---|---|---|
| Jan | 15 | 15 | 3 | 5 |
| Feb | 17 | 17 | 5 | 6 |
| Mar | 22 | 22 | 9 | 10 |
| Apr | 28 | 28 | 15 | 15 |
| May | 35 | 35 | 20 | 20 |
| Jun | 41 | 41 | 25 | 25 |
| Jul | 44 | 44 | 28 | 28 |
| Aug | 44 | 44 | 27 | 27 |
| Sep | 39 | 40 | 23 | 23 |
| Oct | 32 | 32 | 18 | 18 |
| Nov | 23 | 23 | 11 | 11 |
| Dec | 17 | 17 | 6 | 7 |
Average hourly temperature in Qaşr-e Shīrīn
A compact picture of the whole year, hour by hour: each column is a day, each row an hour, and the color is the modeled average temperature. Darker overlays mark night, lighter ones the civil-twilight hours around sunrise and sunset.
Read left to right for the day of the year and top to bottom for the hour of the day; the color is the modeled temperature, cool blues through to hot reds on the same scale as the other charts. A vertical slice is a single day's swing — coolest just before dawn, warmest in the mid-afternoon — while a horizontal slice follows one hour across the seasons. The darker overlay marks night and the lighter one the twilight around sunrise and sunset. Colors run warmest on July afternoons, near 44°C, and coldest before dawn in January, near 5°C.
Qaşr-e Shīrīn weather by month
Every month at a glance. Click a month for its detailed page.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 15° / 5° | 89 | 9.2 | 10 | 4.8 |
| Feb | 17° / 6° | 71 | 8.6 | 10.7 | 5.7 |
| Mar | 22° / 10° | 72 | 7.6 | 11.7 | 7.3 |
| Apr | 28° / 15° | 45 | 5.7 | 12.8 | 6.9 |
| May | 35° / 20° | 11 | 2.1 | 13.8 | 3.2 |
| Jun | 41° / 25° | 0 | 0.1 | 14.3 | 0.1 |
| Jul | 44° / 28° | 0 | 0.1 | 14.1 | 0.0 |
| Aug | 44° / 27° | 0 | 0 | 13.3 | 0.0 |
| Sep | 40° / 23° | 0 | 0.2 | 12.2 | 0.7 |
| Oct | 32° / 18° | 22 | 2.4 | 11.1 | 4.8 |
| Nov | 23° / 11° | 59 | 5.8 | 10.2 | 7.7 |
| Dec | 17° / 7° | 81 | 7.9 | 9.7 | 5.9 |
Chance of rain
How likely it is to rain on a typical day, and how that shifts across the wetter and drier seasons.
Qaşr-e Shīrīn gets about 451 mm of precipitation a year. On a typical day the chance of rain is mostly dry, but that rises and falls sharply with the seasons.
The wetter season lasts 6.2 months, from around Oct 25 to May 2, peaking in February at about 33% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Jun 17.
January is the wettest month by volume, with 89 mm over about 9 wet days; August is the driest, with 0 mm.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain on a day (%) | 29 | 30 | 25 | 19 | 7 | 0 | 0 | 0 | 1 | 8 | 20 | 25 |
| Rain days | 9 | 9 | 8 | 6 | 2 | 0 | 0 | 0 | 0 | 2 | 6 | 8 |
| Rain on a day (%) | Rain days | |
|---|---|---|
| Jan | 29 | 9 |
| Feb | 30 | 9 |
| Mar | 25 | 8 |
| Apr | 19 | 6 |
| May | 7 | 2 |
| Jun | 0 | 0 |
| Jul | 0 | 0 |
| Aug | 0 | 0 |
| Sep | 1 | 0 |
| Oct | 8 | 2 |
| Nov | 20 | 6 |
| Dec | 25 | 8 |
Monthly rainfall
Over a full year, Qaşr-e Shīrīn collects about 451 mm of rain across 50 wet days — roughly 38 mm in an average month.
It doesn’t fall evenly. January is the wettest month with 89 mm, while August is the driest at just 0 mm. The three wettest months alone bring about 54% of the year’s total.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rainfall (mm) | 89 | 71 | 72 | 45 | 11 | 0 | 0 | 0 | 0 | 22 | 59 | 81 |
| Rain days | 9 | 9 | 8 | 6 | 2 | 0 | 0 | 0 | 0 | 2 | 6 | 8 |
| Rainfall (mm) | Rain days | |
|---|---|---|
| Jan | 89 | 9 |
| Feb | 71 | 9 |
| Mar | 72 | 8 |
| Apr | 45 | 6 |
| May | 11 | 2 |
| Jun | 0 | 0 |
| Jul | 0 | 0 |
| Aug | 0 | 0 |
| Sep | 0 | 0 |
| Oct | 22 | 2 |
| Nov | 59 | 6 |
| Dec | 81 | 8 |
Clouds and sunshine
How often the daytime sky is clear, partly cloudy or overcast.
In Qaşr-e Shīrīn, the average share of the sky covered by clouds shows significant seasonal variation over the course of the year.
The clearer part of the year begins around May 13 and lasts for 5.3 months, ending around October 19. The clearest month is July, when the sky is clear, mostly clear, or partly cloudy 100% of the time on average.
The cloudier part of the year begins around October 20 and lasts for 6.7 months, ending around May 12. The cloudiest month is December, when it is overcast or mostly cloudy 36% of the time.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 64 | 66 | 69 | 71 | 83 | 98 | 100 | 100 | 99 | 84 | 71 | 64 |
| Cloudier (%) | 36 | 34 | 31 | 29 | 17 | 2 | 0 | 0 | 1 | 16 | 29 | 36 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| Jan | 64 | 36 |
| Feb | 66 | 34 |
| Mar | 69 | 31 |
| Apr | 71 | 29 |
| May | 83 | 17 |
| Jun | 98 | 2 |
| Jul | 100 | 0 |
| Aug | 100 | 0 |
| Sep | 99 | 1 |
| Oct | 84 | 16 |
| Nov | 71 | 29 |
| Dec | 64 | 36 |
Daylight, sunrise and sunset
Hours of daylight through the year, with sunrise and sunset times.
The gold band is daylight — sunrise runs along its lower edge, sunset along the upper — so it widens toward summer and pinches toward winter, with night the dark area above and below. The longest day, around June 10, brings about 14 h 18 min of light; the shortest, around January 1, only 9 h 42 min — a swing of roughly 4 h 36 min.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 10.0 | 10.7 | 11.7 | 12.8 | 13.8 | 14.3 | 14.1 | 13.3 | 12.2 | 11.1 | 10.2 | 9.7 |
| Sunrise (AM) | 7:39 | 7:21 | 6:45 | 6:02 | 5:30 | 5:19 | 5:30 | 5:53 | 6:16 | 6:39 | 7:08 | 7:33 |
| Sunset (PM) | 5:35 | 6:04 | 6:29 | 6:54 | 7:18 | 7:37 | 7:36 | 7:11 | 6:28 | 5:46 | 5:18 | 5:15 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| Jan | 10.0 | 7:39 | 5:35 |
| Feb | 10.7 | 7:21 | 6:04 |
| Mar | 11.7 | 6:45 | 6:29 |
| Apr | 12.8 | 6:02 | 6:54 |
| May | 13.8 | 5:30 | 7:18 |
| Jun | 14.3 | 5:19 | 7:37 |
| Jul | 14.1 | 5:30 | 7:36 |
| Aug | 13.3 | 5:53 | 7:11 |
| Sep | 12.2 | 6:16 | 6:28 |
| Oct | 11.1 | 6:39 | 5:46 |
| Nov | 10.2 | 7:08 | 5:18 |
| Dec | 9.7 | 7:33 | 5:15 |
Sunny days
How many genuinely sunny days each month brings — days the sky stays clear or mostly clear — banded into plain-language zones.
Qaşr-e Shīrīn averages about 22 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 14 and 30 days.
The sunnier stretch runs 5.1 months, from around May 16 to Oct 17. The sunniest month is June, with roughly 29 sunny days (brilliant).
The greyest month is February, down near 15 sunny days — about 50% fewer than the June peak.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sunny days | 15 | 14 | 16 | 17 | 22 | 29 | 31 | 31 | 29 | 23 | 18 | 15 |
| Sky | Bright | Mixed | Bright | Bright | Bright | Brilliant | Brilliant | Brilliant | Brilliant | Bright | Bright | Bright |
| Sunny days | Sky | |
|---|---|---|
| Jan | 15 | Bright |
| Feb | 14 | Mixed |
| Mar | 16 | Bright |
| Apr | 17 | Bright |
| May | 22 | Bright |
| Jun | 29 | Brilliant |
| Jul | 31 | Brilliant |
| Aug | 31 | Brilliant |
| Sep | 29 | Brilliant |
| Oct | 23 | Bright |
| Nov | 18 | Bright |
| Dec | 15 | Bright |
Humidity comfort
Share of days at each humidity comfort level, based on the dew point — the measure that tracks how muggy it actually feels.
Humidity comfort is graded by the dew point — the temperature at which the air would be fully saturated — because it tracks how muggy it actually feels far better than relative humidity does. A low dew point feels dry and crisp; a high one feels sticky and oppressive no matter the reading on a humidity gauge.
In Qaşr-e Shīrīn, the air stays dry or comfortable essentially all year. Even in October, the muggiest month, it feels humid or worse only about 1% of the time — humidity is not something you need to plan around here.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 100 | 100 | 99 | 91 | 90 | 100 | 99 | 99 | 100 | 92 | 92 | 100 |
| Comfortable (%) | 0 | 0 | 1 | 9 | 9 | 0 | 1 | 1 | 0 | 7 | 8 | 0 |
| Humid (%) | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 1 | 0 |
| Dry (%) | Comfortable (%) | Humid (%) | |
|---|---|---|---|
| Jan | 100 | 0 | 0 |
| Feb | 100 | 0 | 0 |
| Mar | 99 | 1 | 0 |
| Apr | 91 | 9 | 0 |
| May | 90 | 9 | 1 |
| Jun | 100 | 0 | 0 |
| Jul | 99 | 1 | 0 |
| Aug | 99 | 1 | 0 |
| Sep | 100 | 0 | 0 |
| Oct | 92 | 7 | 1 |
| Nov | 92 | 8 | 1 |
| Dec | 100 | 0 | 0 |
Wind
Average wind speed through the year, banded into plain-language speed zones so a number reads as 'breezy' or 'calm' without knowing the scale.
This is the average sustained wind speed at the standard 10 metres above open ground — the steady flow a weather station reports, not the sharper gusts that come and go, which can run half again as fast. It's the number that says whether a place is generally breezy or calm.
Wind in Qaşr-e Shīrīn is steady company: average speeds sit near 8 km/h — calm — in every month of the year, with no meaningful windy or calm season.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 7 | 8 | 9 | 9 | 10 | 9 | 9 | 8 | 8 | 8 | 7 | 7 |
| Feels | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (km/h) | Feels | |
|---|---|---|
| Jan | 7 | calm |
| Feb | 8 | calm |
| Mar | 9 | calm |
| Apr | 9 | calm |
| May | 10 | calm |
| Jun | 9 | calm |
| Jul | 9 | calm |
| Aug | 8 | calm |
| Sep | 8 | calm |
| Oct | 8 | calm |
| Nov | 7 | calm |
| Dec | 7 | calm |
Hazard calendar for Qaşr-e Shīrīn
When the seasonal hazards worth planning around — the rainy season, tropical-cyclone risk and dust haze — are active through the year.
Qaşr-e Shīrīn sees seasonal dust haze (April–May), heaviest in May.
Best time to visit Qaşr-e Shīrīn
To characterize how pleasant the weather is in Qaşr-e Shīrīn throughout the year, we compute two travel scores — one for general sightseeing, one for beach and pool weather.
Around early March, Qaşr-e Shīrīn is still near the start of its best-weather window — great conditions with the peak-season crowds not yet at full swing.
Inferred from the travel-score curve; month-by-month visitor numbers are a planned addition.
The travel score favors clear, rainless days with daytime highs between 18°C and 28°C. Based on this score, the best times of year to visit Qaşr-e Shīrīn for general outdoor tourist activities run from late February to late April and again from late October to early December, with a peak score in the second week of November.
The travel score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Travel score (0–10) | 4.8 | 5.7 | 7.2 | 6.9 | 3.2 | 0.1 | 0.0 | 0.0 | 0.8 | 4.8 | 7.6 | 5.9 |
| Rating | fair | good | good | good | poor | poor | poor | poor | poor | fair | ideal | good |
| Travel score (0–10) | Rating | |
|---|---|---|
| Jan | 4.8 | fair |
| Feb | 5.7 | good |
| Mar | 7.2 | good |
| Apr | 6.9 | good |
| May | 3.2 | poor |
| Jun | 0.1 | poor |
| Jul | 0.0 | poor |
| Aug | 0.0 | poor |
| Sep | 0.8 | poor |
| Oct | 4.8 | fair |
| Nov | 7.6 | ideal |
| Dec | 5.9 | good |
The beach/pool score favors clear, rainless days with daytime highs between 24°C and 34°C. Based on this score, the best times of year to visit Qaşr-e Shīrīn for hot-weather activities run from late March to mid May and again from early October to mid November, with a peak score in the last week of October.
The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).
What to pack for Qaşr-e Shīrīn, by month
Month by month, what's worth putting in the bag — from the temperature range, rain chance, sun and wind. Tap a month for a quick packing note.
For a warm-season trip around July (highs near 44°C), the essentials are light clothes and sun protection. In the cold season around January (highs near 15°C), pack a warm layer and rain gear.
In July, Qaşr-e Shīrīn sees daytime highs around 44°C and nights near 28°C. Pack light clothes and sun protection.
UV index (midday) in Qaşr-e Shīrīn by month
Clear-sky midday UV index through the year, shaded by the WHO exposure levels — how much sun protection each month calls for.
Under clear skies, the midday UV index in Qaşr-e Shīrīn peaks around June 13 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 15 at about 3 (moderate).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 3 | 3 | 4 | 6 | 9 | 10 | 7 | 10 | 7 | 5 | 4 | 3 |
| Level | Moderate | Moderate | Moderate | High | Very high | Very high | High | Very high | High | High | Moderate | Moderate |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 3 | Moderate |
| Feb | 3 | Moderate |
| Mar | 4 | Moderate |
| Apr | 6 | High |
| May | 9 | Very high |
| Jun | 10 | Very high |
| Jul | 7 | High |
| Aug | 10 | Very high |
| Sep | 7 | High |
| Oct | 5 | High |
| Nov | 4 | Moderate |
| Dec | 3 | Moderate |
Average hourly UV index in Qaşr-e Shīrīn
Modeled clear-sky UV for every hour of every day — when in the day sun protection actually matters.
The whole year hour by hour: each column is a day, each row an hour, and the color is the modeled clear-sky UV index — the midday peak scaled down as the sun sits lower in the sky. Darker overlays mark night, lighter ones the civil-twilight hours around sunrise and sunset.
UV falls off far faster than brightness as the sun drops, so even in June the burn window is concentrated in the middle of the day: about 8.5 hours a day reach index 3 (protection recommended), and 5.5 hours reach 6 or more. Mornings and late afternoons stay comparatively gentle year round.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV ≥ 3 (h/day) | 0 | 1.5 | 4 | 6.5 | 7.5 | 8.5 | 7.5 | 8 | 6.5 | 5 | 3 | 0 |
| UV ≥ 6 (h/day) | 0 | 0 | 0 | 1.5 | 4.5 | 5.5 | 3.5 | 5 | 3 | 0 | 0 | 0 |
| UV ≥ 3 (h/day) | UV ≥ 6 (h/day) | |
|---|---|---|
| Jan | 0 | 0 |
| Feb | 1.5 | 0 |
| Mar | 4 | 0 |
| Apr | 6.5 | 1.5 |
| May | 7.5 | 4.5 |
| Jun | 8.5 | 5.5 |
| Jul | 7.5 | 3.5 |
| Aug | 8 | 5 |
| Sep | 6.5 | 3 |
| Oct | 5 | 0 |
| Nov | 3 | 0 |
| Dec | 0 | 0 |
Air quality in Qaşr-e Shīrīn by month
Average fine-particle pollution (PM2.5) through the year — so you can see which months the air is worst, not just the yearly average.
Air quality in Qaşr-e Shīrīn is worst in May — around 43 µg/m³ PM2.5 (poor), and holds fairly steady the rest of the year.
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 33 | 35 | 41 | 41 | 43 | 39 | 36 | 35 | 34 | 35 | 31 | 31 |
| Level | Moderate | Moderate | Poor | Poor | Poor | Poor | Poor | Poor | Moderate | Poor | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 33 | Moderate |
| Feb | 35 | Moderate |
| Mar | 41 | Poor |
| Apr | 41 | Poor |
| May | 43 | Poor |
| Jun | 39 | Poor |
| Jul | 36 | Poor |
| Aug | 35 | Poor |
| Sep | 34 | Moderate |
| Oct | 35 | Poor |
| Nov | 31 | Moderate |
| Dec | 31 | Moderate |
Growing season
Qaşr-e Shīrīn is mild enough that a frost-free day stays more likely than not even in midwinter.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Frost-free chance (%) | 93 | 96 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 97 |
| Frost nights | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Frost-free chance (%) | Frost nights | |
|---|---|---|
| Jan | 93 | 2 |
| Feb | 96 | 0 |
| Mar | 100 | 0 |
| Apr | 100 | 0 |
| May | 100 | 0 |
| Jun | 100 | 0 |
| Jul | 100 | 0 |
| Aug | 100 | 0 |
| Sep | 100 | 0 |
| Oct | 100 | 0 |
| Nov | 100 | 0 |
| Dec | 97 | 0 |
Growing degree days
Growing degree days tally heat above 10°C: each day adds however many degrees its average temperature runs over that threshold, and cold days add nothing. Qaşr-e Shīrīn banks about 4,742 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around July.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Growing degree days (°C·days) | 3 | 42 | 176 | 335 | 541 | 688 | 798 | 788 | 634 | 470 | 212 | 56 |
| Growing degree days (°C·days) | |
|---|---|
| Jan | 3 |
| Feb | 42 |
| Mar | 176 |
| Apr | 335 |
| May | 541 |
| Jun | 688 |
| Jul | 798 |
| Aug | 788 |
| Sep | 634 |
| Oct | 470 |
| Nov | 212 |
| Dec | 56 |
Solar energy
Average daily shortwave solar energy reaching the ground, banded into brightness zones so the number means something at a glance.
Solar energy is how much sunlight actually reaches the ground each day, measured in kilowatt-hours per square metre (kWh/m²) — the combined effect of how long the sun is up, how high it climbs, and how much cloud gets in the way. It's the raw fuel a solar panel has to work with: for scale, 1 kWh/m² a day is dim and wintry, while 7+ is desert-bright.
Qaşr-e Shīrīn receives about 5.5 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 2.7 and 8.0 kWh/m².
The brighter stretch of the year lasts 6.3 months, from around Mar 24 to Sep 30. The brightest month is June, averaging about 8.0 kWh/m² (intense).
The dimmest month is December, down near 2.7 kWh/m² — roughly 66% less than the June peak.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 2.9 | 3.9 | 5.2 | 6.4 | 7.4 | 8.0 | 7.8 | 7.3 | 6.2 | 4.7 | 3.4 | 2.7 |
| Level | Moderate | Moderate | Bright | Intense | Intense | Intense | Intense | Intense | Intense | Bright | Moderate | Moderate |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| Jan | 2.9 | Moderate |
| Feb | 3.9 | Moderate |
| Mar | 5.2 | Bright |
| Apr | 6.4 | Intense |
| May | 7.4 | Intense |
| Jun | 8.0 | Intense |
| Jul | 7.8 | Intense |
| Aug | 7.3 | Intense |
| Sep | 6.2 | Intense |
| Oct | 4.7 | Bright |
| Nov | 3.4 | Moderate |
| Dec | 2.7 | Moderate |
Where is Qaşr-e Shīrīn?
Qaşr-e Shīrīn sits at 34.5°N, 45.6°E, 363 m above sea level, in Iran. The nearest listed city is Khānaqīn, 25 km away.
Topography around Qaşr-e Shīrīn
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Qaşr-e Shīrīn.
Within 3 km, the terrain around Qaşr-e Shīrīn has only modest variations in elevation — a maximum elevation change of 123 m around an average of 372 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 745 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,549 m.
The land around Qaşr-e Shīrīn is covered by grassland (38%) and bare terrain (28%) within 3 km, grassland (59%) and cropland (23%) within 16 km, and grassland (56%) and bare terrain (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 Qaşr-e Shīrīn (34.5156°, 45.5791°, elevation 363 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. 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).