Climate and average weather in Rāmsar

In Rāmsar, the summers are muggy, warm, fairly dry, and clear and the winters are cool, snowy, and partly cloudy.

Best: mid May to late September

Over the course of the year, the temperature in Rāmsar typically varies from 8°C to 27°C, and is rarely below 4°C or above 29°C. August is the hottest month of the year, while February is the coldest.

Based on the travel score, the best time of year to visit Rāmsar for warm-weather activities is from mid May to late September.

Hottest
Aug
27°
Coldest
Feb
Wettest
Oct
246 mm
Driest
Jun
43 mm
Rain / yr
1482 mm
149 wet days
Daylight
9.5–14.5 h
shortest–longest
Elevation
-21 m
36.9°N
Clearest
Aug
28% cloud

Rāmsar is City in Mazandaran province, Iran.

Founded
1943

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Rāmsar 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 mid May to late September.

Temperature through the year

Average highAverage lowShaded bands: 10–90% of days

Daily average highs and lows in Rāmsar, from 1991–2020 of climate data. The shaded bands show the range most days fall in — 10th to 90th percentile.

The hot season lasts 3.8 months, from June 6 to September 28, with daily high temperatures above 23°C. The hottest month of the year in Rāmsar is August, with an average high of 27°C and low of 25°C.

The cool season lasts 3.7 months, from December 9 to April 1, with daily high temperatures below 13°C. The coldest month of the year in Rāmsar is February, with an average low of 8°C and high of 10°C.

Days typically run about 2°C warmer than nights year-round.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDec
Avg high (°C)Avg low (°C)
Jan119
Feb108
Mar129
Apr1513
May2017
Jun2422
Jul2624
Aug2725
Sep2422
Oct2119
Nov1714
Dec1311

Average hourly temperature in Rāmsar

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 August afternoons, near 27°C, and coldest before dawn in February, near C.

JanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AM

Rāmsar weather by month

Every month at a glance. Click a month for its detailed page.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan11° / 1631719.82.3
Feb10° / 13014.51.710.62.1
Mar12° / 10514.50.311.72.8
Apr15° / 13°7511.8012.94.5
May20° / 17°478.8013.96.6
Jun24° / 22°436.3014.58.0
Jul26° / 24°436.5014.37.8
Aug27° / 25°527.2013.47.5
Sep24° / 22°15012.5012.36.8
Oct21° / 19°24615.70115.8
Nov17° / 14°24317.20.2104.3
Dec13° / 11°18416.60.39.53.1

Chance of rain

How likely it is to rain on a typical day, and how that shifts across the wetter and drier seasons.

Rāmsar gets about 1482 mm of precipitation a year. On a typical day the chance of rain is often wet, but that rises and falls sharply with the seasons.

The wetter season lasts 6.6 months, from around Sep 17 to Apr 5, peaking in December at about 61% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Jul 26.

October is the wettest month by volume, with 246 mm over about 16 wet days; June is the driest, with 43 mm. Some of the cold-season precipitation falls as snow.

0%10%20%30%40%50%60%70%JanFebMarAprMayJunJulAugSepOctNovDecwetterdrierwettermostly drysome rainoften wetvery wetDec 1 · 61%Jul 26 · 18%
Rain on a day (%)Rain days
Jan5417
Feb5115
Mar4715
Apr3912
May309
Jun216
Jul217
Aug247
Sep4113
Oct5116
Nov5717
Dec5517

Monthly rainfall

Over a full year, Rāmsar collects about 1482 mm of rain across 149 wet days — roughly 123 mm in an average month.

It doesn’t fall evenly. October is the wettest month with 246 mm, while June is the driest at just 43 mm. The three wettest months alone bring about 45% of the year’s total, and some of the cold-season precipitation falls as snow.

050100150200250300JanFebMarAprMayJunJulAugSepOctNovDec1631301057547434352150246243184
Rainfall (mm)Rain daysSnow days
Jan163171
Feb130152
Mar105150
Apr75120
May4790
Jun4360
Jul4370
Aug5270
Sep150130
Oct246160
Nov243170
Dec184170

Snow in Rāmsar

Average snowy days through the year, the snow-season span, and estimated snowfall — for ski trips and the perennial 'will there be snow at Christmas?' question.

Rāmsar averages about 4 snowy days a year. Snow season runs roughly Jan 3 to Mar 14 — about 2.3 months.

February is snowiest, with roughly 1.7 days of snow and an estimated 14 cm of snowfall. Over the year that adds up to an estimated 23 cm of snow.

01234JanFebMarAprMayJunJulAugSepOctNovDecsnow seasonFeb 8
Snow daysSnowfall (cm)
Jan15
Feb214
Mar02
Apr00
May00
Jun00
Jul00
Aug00
Sep00
Oct00
Nov01
Dec01

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

How often the daytime sky is clear, partly cloudy or overcast.

In Rāmsar, 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 5.0 months, ending around October 12. The clearest month is July, when the sky is clear, mostly clear, or partly cloudy 87% of the time on average.

The cloudier part of the year begins around October 13 and lasts for 7.0 months, ending around May 12. The cloudiest month is December, when it is overcast or mostly cloudy 61% of the time.

0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%JanFebMarAprMayJunJulAugSepOctNovDecJul 28 · 91%Dec 9 · 36%clearmostly clearpartly cloudymostly cloudyovercastcloudierclearercloudier
Clearer (%)Cloudier (%)
Jan4060
Feb4060
Mar4456
Apr4951
May6238
Jun8416
Jul8713
Aug8713
Sep7030
Oct5545
Nov4357
Dec3961

Daylight, sunrise and sunset

DaylightNight

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 9, brings about 14 h 30 min of light; the shortest, around January 1, only 9 h 30 min — a swing of roughly 5 hours.

12 AM4 AM8 AM12 PM4 PM8 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDec
Daylight (h)Sunrise (AM)Sunset (PM)
Jan9.87:255:09
Feb10.67:045:40
Mar11.76:266:08
Apr12.95:396:36
May13.95:057:03
Jun14.54:527:23
Jul14.35:047:22
Aug13.45:296:54
Sep12.35:556:09
Oct11.06:215:24
Nov10.06:534:52
Dec9.57:194:48

Sunny days

How many genuinely sunny days each month brings — days the sky stays clear or mostly clear — banded into plain-language zones.

Rāmsar averages about 13 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 7 and 24 days.

The sunnier stretch runs 4.7 months, from around May 20 to Oct 10. The sunniest month is August, with roughly 22 sunny days (bright).

The greyest month is December, down near 8 sunny days — about 63% fewer than the August peak.

051015202530JanFebMarAprMayJunJulAugSepOctNovDecgreyersunniergreyergloomymixedbrightbrilliantAug 124 daysDec 57 days
Sunny daysSky
Jan9Mixed
Feb8Mixed
Mar9Mixed
Apr10Mixed
May13Mixed
Jun20Bright
Jul23Bright
Aug23Bright
Sep17Bright
Oct13Mixed
Nov9Mixed
Dec8Mixed

Humidity comfort

DryComfortableHumidMuggyOppressiveMiserable

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 Rāmsar, how humid it feels changes dramatically over the year.

The more humid part of the year lasts 5.6 months, from around May 13 to October 29. The muggiest month is July, when the air feels humid, muggy or worse about 98% of the time.

The most comfortable stretch runs from around October 30 to May 12, and January is the most comfortable month — the air is dry or comfortable 100% of the time.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecJan 1 · 100%Jul 30 · 0%miserableoppressivecomfortablehumiddrymuggycomfortablehumidcomfortable
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
Jan10000000
Feb10000000
Mar10000000
Apr79192000
May1435341510
Jun173141191
Jul0214403510
Aug019353817
Sep172440254
Oct1225362430
Nov592812100
Dec9640000

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.

Across the year, average wind speed in Rāmsar is typically calm, near 11 km/h, and varies moderately with the seasons.

The windier part of the year lasts 6.4 months, from around Oct 3 to Apr 16. The windiest month is December, averaging about 13 km/h (light breeze).

The calmer part of the year runs from around Apr 17 to Oct 2, with July the calmest month at about 9 km/h.

05101520JanFebMarAprMayJunJulAugSepOctNovDecwindiercalmerwindiercalmlight breezeDec 2 · 14 km/hJul 1 · 9 km/h
Wind speed (km/h)Feels
Jan13light breeze
Feb13light breeze
Mar12light breeze
Apr11calm
May10calm
Jun9calm
Jul9calm
Aug9calm
Sep10calm
Oct12calm
Nov13light breeze
Dec13light breeze

Hazard calendar for Rāmsar

In seasonPeak

When the seasonal hazards worth planning around — the rainy season, tropical-cyclone risk and dust haze — are active through the year.

Rāmsar's rainy season runs September–February, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Best time to visit Rāmsar

TravelBeach/poolTemperatureCloudsPrecipitation

To characterize how pleasant the weather is in Rāmsar throughout the year, we compute two travel scores — one for general sightseeing, one for beach and pool weather.

Around mid September, Rāmsar is still near the tail of its best-weather window — great conditions with the peak-season crowds already thinning.

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 time of year to visit Rāmsar for general outdoor tourist activities is from mid May to late September, with a peak score in the third week of June.

0246810JanFebMarAprMayJunJulAugSepOctNovDecbest timetravel scoretemperaturecloudsprecipitationJun 16 · 8.2

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).

Travel score (0–10)Rating
Jan2.3poor
Feb2.1poor
Mar2.8poor
Apr4.5fair
May6.5good
Jun8.0ideal
Jul7.8ideal
Aug7.5ideal
Sep6.8good
Oct5.8good
Nov4.3fair
Dec3.1poor

The beach/pool score favors clear, rainless days with daytime highs between 24°C and 34°C. Based on this score, the best time of year to visit Rāmsar for hot-weather activities is from mid June to early September, with a peak score in the last week of July.

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebeach/pool scoretemperaturecloudsprecipitationJul 30 · 7.9

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 Rāmsar, by month

EssentialRecommendedOptional

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 August (highs near 27°C), the essentials are light clothes and sun protection. In the cold season around February (highs near 10°C), pack a warm layer and rain gear.

Light clothing
Warm layer
Winter coat
Rain gear
Sun protection
Windbreaker

In August, Rāmsar sees daytime highs around 27°C and nights near 25°C. Worth packing: light clothes and sun protection. About 7 days see rain.

Sea temperature near Rāmsar

Average ocean temperature at the nearest coast, month by month, banded into swim-comfort zones — the other half of the beach question.

The sea at the nearest coast (about 21 km away) is warmest in August at about 28°C and coldest in February near 11°C.

It's comfortable for a long swim from May 22 to Nov 5 — about 5.5 months when the water holds above 20°C.

10°20°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan12Bracing
Feb11Bracing
Mar11Bracing
Apr14Bracing
May19Cool
Jun24Warm
Jul27Warm
Aug28Warm
Sep26Warm
Oct23Refreshing
Nov19Cool
Dec15Bracing

UV index (midday) in Rāmsar by month

LowModerateHighVery highExtreme

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 Rāmsar peaks around July 17 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateJul 17UV 9Dec 22UV 3
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar4Moderate
Apr7High
May9Very high
Jun8Very high
Jul9Very high
Aug9Very high
Sep7High
Oct5Moderate
Nov3Moderate
Dec3Moderate

Average hourly UV index in Rāmsar

LowModerateHighVery highExtreme

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 July 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.

JanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AM
UV ≥ 3 (h/day)UV ≥ 6 (h/day)
Jan00
Feb30
Mar40
Apr6.52
May84.5
Jun85
Jul8.55.5
Aug7.54.5
Sep6.53
Oct4.50
Nov1.50
Dec00

Air quality in Rāmsar by month

GoodModeratePoorUnhealthyVery unhealthy

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 Rāmsar is worst in February — around 50 µg/m³ PM2.5 (poor), about 3.1× the cleanest month (July, 16 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorModeratePoorFeb 1149 µg/m³Jul 1817 µg/m³
PM2.5 (µg/m³)Level
Jan48Poor
Feb50Poor
Mar45Poor
Apr40Poor
May33Moderate
Jun21Moderate
Jul16Moderate
Aug20Moderate
Sep25Moderate
Oct30Moderate
Nov37Poor
Dec45Poor
Almanac & agriculture

Growing season

Chance of a frost-free dayFrost-free year round

Rāmsar is frost-free year round — even the coldest nights rarely reach freezing, so there is no start or end to the growing season.

0%25%50%75%100%JanFebMarAprMayJunJulAugSepOctNovDecfrost-free year round
Frost-free chance (%)Frost nights
Jan1000
Feb1000
Mar1000
Apr1000
May1000
Jun1000
Jul1000
Aug1000
Sep1000
Oct1000
Nov1000
Dec1000

Growing degree days

Degree days (base 10°C)Frost-free shaded

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. Rāmsar banks about 2,687 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around August.

01,0002,0003,000JanFebMarAprMayJunJulAugSepOctNovDec
Growing degree days (°C·days)
Jan7
Feb0
Mar19
Apr117
May266
Jun386
Jul473
Aug489
Sep398
Oct306
Nov163
Dec63

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.

Rāmsar receives about 4.0 kWh/m² a day of solar energy on average — moderate — with a clear seasonal swing between 1.8 and 6.0 kWh/m².

The brighter stretch of the year lasts 5.9 months, from around Mar 17 to Sep 12. The brightest month is June, averaging about 5.9 kWh/m² (bright).

The dimmest month is December, down near 1.8 kWh/m² — roughly 69% less than the June peak.

01234567JanFebMarAprMayJunJulAugSepOctNovDecdimmerbrighterdimmerdimmoderatebrightintenseJun 76.0 kWhDec 101.8 kWh
Solar energy (kWh/m²)Level
Jan2.1Moderate
Feb2.9Moderate
Mar4.0Moderate
Apr5.0Bright
May5.7Bright
Jun5.9Bright
Jul5.7Bright
Aug5.2Bright
Sep3.9Moderate
Oct3.0Moderate
Nov2.1Moderate
Dec1.8Dim

Where is Rāmsar?

Rāmsar sits at 36.9°N, 50.6°E, -21 m above sea level, in Iran. The nearest listed city is Katālem va Sādāt Shahr, 5.0 km away.

Topography around Rāmsar

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Rāmsar.

Within 3 km, the terrain around Rāmsar has significant variations in elevation — a maximum elevation change of 538 m around an average of 65 m above sea level; within 16 km, extreme variations in elevation — a maximum elevation change of 2,548 m; within 80 km, extreme variations in elevation — a maximum elevation change of 4,754 m.

The land around Rāmsar is covered by trees (58%) and artificial surfaces (20%) within 3 km, trees (49%) and water (43%) within 16 km, and water (44%), grassland (28%) and trees (21%) within 80 km.

3 km
538 m
16 km
2,548 m
80 km
4,754 m
treesgrasslandcroplandartificial surfacesbare terrainwater
Nearby: Katālem va Sādāt Shahr 5.0 km · Tonekābon 23 km · Rūdsar 40 km · Amlash 45 km · Langarūd 54 km · Lāhījān 65 km · Āstāneh-ye Ashrafīyeh 73 km · Sīāhkal 74 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
Muslim 99%Christian 1%Baha'i 0%agnostic 0%

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 Rāmsar (36.918°, 50.648°, elevation -21 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).