Spring rainfall rise has lifted precipitation levels across Iran during early spring 2026. Meteorological officials report totals above long-term averages. They also note clearer improvements in regional water balance.
National measurements show spring rainfall rise pushing totals about seven percent above normal. Authorities recorded 13 millimeters above the 30-year average nationwide. Data confirms strong variation between provinces across the country.
Western and northwestern regions recorded nearly double rainfall compared with last year. Several storm systems delivered concentrated precipitation events over short periods. These events significantly raised local accumulation levels.
Ilam province registered its highest rainfall in 76 years. South Khorasan, Kerman, Hormozgan, southern Fars, and Bushehr also exceeded seasonal norms. Water inflows improved in several local basins.
Snow accumulation increased across the Alborz Mountains and Zagros highlands. Lower temperatures helped preserve snow cover through late winter. Meltwater contributed to stronger reservoir inflows in spring.
Tehran province still reported rainfall deficits despite recent gains. The shortfall improved from minus fifty-five percent to minus thirty-five percent. Authorities continue to monitor urban water stress conditions.
Forecast models suggest renewed rainfall activity during mid-spring. Western regions expect stronger precipitation compared with other areas. Southern and southeastern regions may stay below normal in summer.
Meteorologists describe neutral Pacific conditions shifting toward warming tendencies. Models indicate possible movement toward an El Niño phase later in the year. Seasonal effects may remain limited due to dry summer patterns.
Ahad Vazifeh explained that rainfall distribution remains highly uneven. He highlighted stronger benefits for western provinces compared with eastern areas. He also noted improving but uneven national water conditions.
Spring rainfall rise has improved short-term water security across basins, boosted soil moisture and early crops, led dam operators to adjust storage, and continues to guide hydrological planning in Iran as mostly normal autumn precipitation is expected overall and consistently nationwide.