The Dew Factor in Day-Night Cricket Explained: Why Evening Conditions Favour Batsmen
How dew affects day-night cricket — the physics of dew settling on the outfield and pitch (drops in temperature, humidity rise), why the ball becomes slippery for bowlers and harder to grip for spinners, the advantage this gives to batting teams in the second innings, famous dew-affected matches (IPL, T20 World Cups), and how groundstaff manage dew.
Dew is one of the most important factors in day-night cricket — and one of the least discussed in mainstream cricket commentary. As the sun sets and the temperature drops in the evening session of a day-night cricket match, moisture condenses from the air onto the cooler surfaces of the pitch and outfield. This phenomenon (atmospheric dew) makes the ball wet and slippery, the outfield faster, and grip for bowlers significantly more difficult. The team batting second in a day-night match (in the cooler evening) typically benefits from these conditions — which is why winning the toss at day-night matches and choosing to field first (to bat second in the dew) is so common.
The Physics of Dew: Why It Affects Cricket
How dew affects the ball and conditions: (1) The ball becomes wet: as dew settles on the outfield, fielders running on the outfield and rolling the ball on the ground pick up moisture. A wet ball is slippery for bowlers — they cannot grip the ball securely for conventional swing, spin (finger spin requires dry contact to impart rotation), or seam bowling. The ball also does not swing or spin as effectively when wet; (2) Spin bowling is most affected: finger-spin bowlers (off-spinners, left-arm orthodox spinners) require their fingers to grip the ball and apply friction to generate turn. A wet ball provides insufficient friction — the ball slides off the fingers rather than spinning. Leg-spinners (wrist-spin) are slightly less affected because the rotation mechanism is different; (3) Seam bowling: the wet ball also slides off the seam differently. The seam movement (the ball hitting the pitch and deviating via the raised seam) is reduced when the ball is slippery; (4) The outfield becomes faster: a dewy outfield reduces friction, meaning balls that reach the outfield travel to the boundary more quickly. This further aids batting — mishit shots that would normally stop in the outfield go for fours; (5) The pitch surface: dew on the pitch makes the pitch surface slightly softer — reducing the ball's ability to deviate sharply off the pitch.
Impact on Match Strategy
Dew's effect on cricket strategy: (1) Toss decisions: at day-night T20 matches in conditions prone to dew (most of the subcontinent, the Caribbean, and parts of Australia in summer), winning the toss and electing to field first is the dominant choice. Teams prefer to bat second in the dew — easier bowling conditions for the chasing team's bowlers rarely matters because batting in dew is the advantage; (2) T20 World Cup group stages: dew effects in subcontinental-hosted T20 World Cups (India has hosted the ICC T20 WC in 2016, and the 2021 WC was partly hosted in UAE) create consistent second-innings advantages. Tournament scheduling tries to manage this (morning/afternoon matches avoid dew entirely); (3) IPL: the Indian Premier League is one of the world's most dew-affected tournaments — the majority of matches are day-night games in Indian cities where dew is common in evening conditions (October-November in the UAE phase of IPL 2020, and March-May in India). Toss decisions are significantly influenced by dew at IPL venues; (4) Countermeasures: groundstaff at international venues use dew-suppressing preparations on outfields — special compounds that reduce moisture accumulation. However, these are partially effective and do not eliminate dew in humid climates.
Famous Dew-Affected Matches
Matches where dew significantly affected the outcome: (1) 2021 T20 World Cup Final (Dubai, UAE, November 14): Australia vs New Zealand, evening match. Australia won the toss, elected to field first, and batted in the evening session (dew conditions). New Zealand's bowlers struggled to grip the ball in the second innings. Australia chased 173 comfortably (4 wickets down with 1 ball remaining). The dew was visible — New Zealand bowlers were seen drying the ball repeatedly; (2) IPL regularly: IPL matches between teams with large spin bowling reliance vs pace-dominant teams show dew effects clearly. Teams are routinely seen complaining about dew conditions in post-match interviews; (3) 2016 T20 World Cup Final (Kolkata, India): West Indies vs England. Evening match, dew settled in the second innings. Marlon Samuels batted throughout (West Indies 161/6), then Carlos Brathwaite hit Ben Stokes for 4 consecutive sixes in the final over — West Indies won by 4 wickets. The dew factor made the conditions easier for West Indies to bat in the second innings; (4) Day-night Tests: the pink ball is used in day-night Tests (replacing the red ball) specifically because the pink ball is more visible under lights and has different surface properties. Even in pink-ball day-night Tests, dew affects evening conditions — and has produced several first-evening collapses when batting teams underestimated the difficulty of facing swing bowling in cooler, dewy conditions.
Frequently asked questions
What is the dew factor in cricket?
The dew factor in cricket refers to the atmospheric moisture that settles on the pitch and outfield during the evening session of day-night matches as temperatures drop. Dew makes the ball wet and slippery — bowlers cannot grip it effectively for swing, spin, or seam. This makes bowling significantly harder and batting easier in the dew. The team batting second in a day-night match benefits from dew conditions, which is why teams winning the toss at day-night venues (especially in South Asia) typically elect to field first — so they can bat second in the dew.
Does dew affect spin bowling?
Yes — dew affects spin bowling more significantly than any other type of bowling. Finger-spin bowlers (off-spinners, left-arm orthodox) require dry finger contact with the ball to impart spin through friction. A wet ball slides off the fingers rather than spinning — reducing turn, flight variation, and the bowler's ability to control the ball. Leg-spinners (wrist-spin) are also affected but slightly less so because the wrist rotation mechanism is less dependent on finger friction. In subcontinental day-night T20 matches, spin bowling in the second innings can become almost ineffective when dew is heavy — which has significant tournament implications.
Why do teams choose to field first in day-night T20s?
Teams choose to field first in day-night T20s primarily because of the dew advantage: by fielding first (bowling in the daylight phase), they get to bat second in the evening when dew settles on the pitch and outfield. Dew makes bowling harder (slippery ball, reduced spin/swing) and batting easier (faster outfield, less ball movement). The team batting second in dew conditions has a measurable advantage. Statistical analysis of day-night T20 matches in dew-prone venues (South Asia, UAE, Caribbean) shows that teams batting second win more often — which is why the toss is particularly valuable in these conditions.