Chālūs in Spring
In spring (March, April and May), Chālūs sees average daytime highs around 17°C and overnight lows near 13°C, with 216 mm of rain over about 35 wet days across the season. It is the 3rd-warmest season and the 3rd-wettest season.
Over the season highs climb from about 12°C in early March to 23°C by late May. The sky is clear or mostly clear about 30% of the time across spring, and the air most often feels dry.
Spring is Chālūs's 3rd-best season to visit on our travel score. For the whole year in context, see Chālūs's year-round climate.
- Avg daytime high
- 17°C
- 3rd-warmest season
- Avg overnight low
- 13°C
- Rainfall
- 216 mm
- 35 wet days
- Avg wind
- 9 km/h
- Travel score
- 5.0
- 3rd-best season
- Months
- Mar · Apr · May
Temperature in Chālūs in Spring
Over the season highs climb from about 12°C in early March to 23°C by late May.
A typical spring day in Chālūs reaches about 17°C and drops to 13°C overnight. The warmest of the three months is May, the coolest March.
Chālūs weather by month
How the three spring months (March, April and May) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 12° / 9° | 142 | 15.2 | 0.7 | 9.8 | 2.6 |
| Feb | 11° / 8° | 123 | 14.1 | 1 | 10.6 | 2.5 |
| Mar | 13° / 9° | 100 | 14.1 | 0.1 | 11.7 | 3.3 |
| Apr | 17° / 13° | 68 | 11.3 | 0 | 12.9 | 5.1 |
| May | 21° / 18° | 48 | 9.8 | 0 | 13.9 | 6.6 |
| Jun | 25° / 22° | 49 | 8.5 | 0 | 14.5 | 7.4 |
| Jul | 27° / 24° | 59 | 10.8 | 0 | 14.3 | 6.8 |
| Aug | 27° / 25° | 60 | 11.2 | 0 | 13.4 | 6.6 |
| Sep | 25° / 22° | 148 | 14.6 | 0 | 12.2 | 6.3 |
| Oct | 22° / 19° | 205 | 15.2 | 0 | 11.1 | 5.9 |
| Nov | 17° / 14° | 219 | 15.8 | 0.1 | 10 | 4.7 |
| Dec | 14° / 11° | 156 | 14.8 | 0 | 9.5 | 3.4 |
Cloud cover in Spring
The sky is clear or mostly clear about 30% of the time across spring.
Chance of precipitation in Spring
Chālūs gets around 216 mm of rain over 35 wet days across spring. The line is the day-by-day chance of measurable precipitation.
Humidity in Spring
Most of spring feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Spring
Winds average 9 km/h across spring.
Sunrise & sunset in Spring
Daylight runs from about 11 h 06 min in early March to 14 h 18 min by late May. The lit band spans sunrise to sunset each day.
Solar energy in Spring
Average shortwave solar energy reaching the ground each day across spring, about 5.3 kWh/m².
Hazard calendar for Chālūs
In spring, Chālūs overlaps its rainy season season. The full year is below, with each hazard's peak months called out.
Chālūs's rainy season runs September–March, when most of the year's rain falls.
Is spring a good time to visit Chālūs?
Our two travel scores rate spring for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
spring is a reasonable time to visit Chālūs for sightseeing.
What to pack for Chālūs in Spring
From spring's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In spring, Chālūs sees daytime highs around 17°C and nights near 13°C. Pack rain gear and sun protection. Worth having: a warm layer. About 35 days see rain.
Sea temperature near Chālūs in Spring
The nearest coast averages about 15°C across spring — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 19 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 21 to Nov 7 — about 5.6 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 12 | 11 | 11 | 14 | 19 | 24 | 27 | 28 | 26 | 23 | 19 | 15 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Cool | Warm | Warm | Tropical | Warm | Refreshing | Cool | Cool |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 12 | Bracing |
| Feb | 11 | Bracing |
| Mar | 11 | Bracing |
| Apr | 14 | Bracing |
| May | 19 | Cool |
| Jun | 24 | Warm |
| Jul | 27 | Warm |
| Aug | 28 | Tropical |
| Sep | 26 | Warm |
| Oct | 23 | Refreshing |
| Nov | 19 | Cool |
| Dec | 15 | Cool |
UV index in Chālūs in Spring
Clear-sky midday UV across spring averages around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Chālūs peaks around July 17 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 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 | Moderate | Moderate | Moderate | High | Very high | Very high | Very high | Very high | High | Moderate | Moderate | Moderate |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 2 | Moderate |
| 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 Chālūs in Spring
Average fine-particle pollution (PM2.5) through the year — so you can see where spring falls, not just the annual average.
Air quality in Chālūs is worst in February — around 46 µg/m³ PM2.5 (poor), about 3.0× 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) | 42 | 46 | 42 | 36 | 31 | 21 | 15 | 20 | 27 | 30 | 32 | 36 |
| Level | Poor | Poor | Poor | Poor | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Poor |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 42 | Poor |
| Feb | 46 | Poor |
| Mar | 42 | Poor |
| Apr | 36 | Poor |
| May | 31 | Moderate |
| Jun | 21 | Moderate |
| Jul | 15 | Moderate |
| Aug | 20 | Moderate |
| Sep | 27 | Moderate |
| Oct | 30 | Moderate |
| Nov | 32 | Moderate |
| Dec | 36 | Poor |
Where is Chālūs?
Chālūs sits at 36.7°N, 51.4°E, 26 m above sea level, in Iran. The nearest listed city is Nowshahr, 7.0 km away.
Topography around Chālūs
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Chālūs.
Within 3 km, the terrain around Chālūs has significant variations in elevation — a maximum elevation change of 284 m around an average of 33 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,846 m; within 80 km, extreme variations in elevation — a maximum elevation change of 4,754 m.
The land around Chālūs is covered by artificial surfaces (40%) and trees (39%) within 3 km, trees (47%) and water (42%) within 16 km, and water (46%), grassland (26%) 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 Chālūs (36.655°, 51.4204°, elevation 26 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.